US Green Building Council and ASHRAE Fact Sheet Tips for Smarter HVAC Filtration and Cleaner Air In Schools

School indoor air quality affects millions of students daily, yet many educational facilities still rely on outdated filtration systems that fail to protect against many common airborne contaminants. With growing awareness of how air quality impacts student health and academic performance, schools need practical guidance on upgrading their HVAC filtration systems effectively.

A recent fact sheet published by the U.S. Green Building Council (USGBC) offers vital insights for school administrators facing challenges in updating their schools’ air filtration technology. This installment in the “School Indoor Air Quality Fact Sheets” series was developed in collaboration with Flu Lab, ASHRAE, and air filtration experts from leading companies and educational institutions in the field.

Proper air filtration and well-planned ventilation can significantly reduce respiratory illnesses, improve cognitive function, and help schools operate safely during wildfire events. The challenge isn’t whether to upgrade; it’s knowing which filters work best for your specific system without overwhelming your equipment.

Understanding MERV Ratings and Filter Efficiency

MERV (Minimum Efficiency Reporting Value) ratings measure a filter’s ability to capture particles of various sizes. Efficiency is indicated numerically with MERV 1 providing the lowest efficiency and MERV 16 indicating the highest efficiency. School HVAC systems have historically used  MERV 8 panel filters. Filters with a MERV value of less than MERV 7 shouldn’t be used in public buildings. 

A filter’s MERV value is determined by testing its efficiency against particles of different sizes. Dirt particles, divided into three size categories E1, E2, and E3, which range from a low of 0.3 microns in size to a high of 10 microns. These particles are passed through a test duct and onto the filter. The filter’s ability to capture particles across these size ranges is compared to a MERV chart,  The final MERV value is the highest rating at which the filter meets all three size range requirements.

A MERV 13 rating, for example, requires that the tested filter capture at least 50% of E1 particles, at least 85% of E2 particles, and at least 90% of E3 particles. 

For infectious aerosols carrying viruses like SARS-CoV-2, influenza, and RSV, higher MERV-rated filters prove very effective. A MERV 13 filter is rated to remove  77% of particles in the size range of typical infectious aerosols, while a MERV 16 filter is rated to achieve 95% removal efficiency of these same particles. 

Important note:  Some filters achieve these higher MERV ratings by relying on a temporary electrostatically charged media. This charge can lose effectiveness once the filter is in use and begins loading with dirt. Always look for an air filter’s MERV-A value, which gives a better indication of its long-term performance.

Debunking the High-Pressure Drop Myth

A persistent myth that air filtration specialists encounter in their work with schools is that MERV 13 filters, or higher-efficiency filters in general, automatically create excessive pressure drop, overwhelming HVAC systems. This assumption prevents many schools from upgrading to more effective air filtration, despite significant health and performance benefits.

In reality, pressure drop doesn’t correlate directly with MERV ratings; a well-designed MERV 13 filter can operate at similar pressure levels as a basic MERV 8 filter. Construction methods, filter depth, and media design influence pressure drop more than the efficiency rating alone. High-performance air filters use advanced construction techniques — such as dual-layered media, pleat geometry, or advanced fiber arrangements — to enhance particle removal while maintaining lower pressure drop.

The USGBC fact sheet highlights that MERV 13 filters can often have the same pressure drop as MERV 8 filters while providing superior protection from airborne contaminants. Don’t assume your system can’t handle a MERV 13 upgrade; instead request manufacturer data comparing pressure drops between your current filter and potential replacements. Many schools discover they can upgrade filtration without modifications to their existing equipment. Contact a qualified air filtration professional should you need assistance. 

The AQ13 Advantage for School Applications

Among the available filter options, a MERV 13 2-inch pleated air filter with a low pressure drop combines high particle removal efficiency with practical operational benefits. A filter like this makes cleaner air achievable for school maintenance teams without damaging HVAC systems or sacrificing airflow. 

The AQ13 represents this type of filter well, delivering MERV 13 performance while maintaining pressure drop levels comparable to standard MERV 8 filters. These filters typically provide double the service life of conventional MERV 8 options, reducing replacement frequency and maintenance costs. The filter has been designed and constructed of high-strength materials to easily withstand this additional service life. 

This extended service life proves particularly valuable for schools managing multiple buildings and tight maintenance schedules. Fewer filter changes mean reduced labor costs and less disruption to building operations, while maintaining superior air quality protection for students and staff. The flexibility to schedule filter changeouts to seasons of the year where the weather conditions are more favorable is particularly valuable to facilities located in areas where winters are harsh or where the summer heat can be dangerous. 

Addressing Wildfire Smoke and Other Air Quality Challenges

Schools should also consider their geographic risk profile when selecting air filtration strategies. Facilities near high-traffic areas or in regions with frequent air quality alerts benefit from the enhanced protection that higher MERV ratings provide, even during normal operating conditions.

Wildfire smoke presents unique filtration challenges that require specialized consideration. Smoke particles range from 0.05-0.4 microns, smaller than most infectious aerosols and more difficult to capture. Even high-efficiency MERV filters achieve lower removal rates for wildfire particles compared to virus-containing aerosols.

LEARN MORE: How High-Efficiency Air Filters Can Help Protect Indoor Air Quality During Wildfire Season 

The fact sheet points out that a  MERV 13 filter removes approximately 69% of wildfire particles, while MERV 16 achieves 96% removal. For schools in wildfire-prone regions, this difference could justify the higher efficiency investment, especially when combined with activated media filters to address molecular pollutants (i.e. gaseous contaminants) that mechanical filters cannot capture.

Making Smart Air Quality Decisions for Your School

Upgrading school air filtration requires balancing multiple factors, including IAQ needs, system compatibility, maintenance requirements, and budget constraints. 

For the best performance, inspect your school’s HVAC system filters every quarter or during each filter change, whichever comes first. The fact sheet recommends tracking several factors at the district level so that IAQ challenges can be effectively addressed:

• Number of filters and prefilters in the system, along with their locations and MERV ratings.
• Dimensions of the current filter rack.
• The pressure drop each fan can handle, for both clean and dirty filters.

Additional tips from the fact sheet include working with qualified professionals to evaluate upgrade options specific to your equipment and local air quality challenges, requesting detailed manufacturer data on pressure drop performance, and remembering that even buildings with limited outdoor ventilation can significantly reduce health risks through efficient HVAC filtration. Filter upgrades are one of the most accessible and impactful improvements schools can make to protect student and staff wellbeing.

For more details, graphs, and diagrams explaining how to upgrade school air filtration and ventilation, access the full factsheet. 

About Camfil USA 

The Camfil Group is headquartered in Stockholm, Sweden, and has 29 manufacturing sites, six R&D centers, local sales offices in 35+ countries, and 5,700 employees and growing. We proudly serve and support customers in a wide variety of industries and communities across the world. To discover how Camfil USA can help you to protect people, processes, and the environment, visit us at www.camfil.us. 

Media Contact 

Lynne Laake 

Camfil USA Air Filters 

Phone: 888-599-6620 

Email: Lynne.Laake@camfil.com 

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Breathe Better, Spend Smarter – Upgrading Air Filtration in Schools and Universities

During the COVID-19 pandemic, the importance of indoor air quality (IAQ) in educational buildings gained greater awareness and significance because of its association with health, well-being, and academic performance. As indoor air quality becomes a priority for schools, colleges and universities, many are investing more in the assessment and improvement of their HVAC systems. 

As the average school building is nearly a decade old, many have outdated or inadequate HVAC systems not designed for infection control or modern indoor air quality needs. COVID-19 has brought to light that a large number of schools are still operating with old HVAC infrastructures that do not meet infection control guidelines or standards. 

Designed primarily for heating and cooling, these obsolete systems lack the capacity for adequate filtration of airborne pathogens, which is one key to protecting the health of students, staff and faculty. EPA Indoor Air Quality studies suggest that 40% of schools have inadequate school air filtration systems that fail to effectively reduce airborne transmission risks. 

A nationwide poll conducted in 2021 among 500 higher education managers and executives showed that the most common strategy for addressing IAQ was a school HVAC filtration upgrade to reduce airborne contaminants and create healthier learning environments for students and staff. 

Investing in premium school air filters can help lower disease transmission by decreasing exposure to allergens, pollutants, and airborne viruses. Additionally, these high-efficiency air filters provide economic and operational benefits for schools and universities by reducing absenteeism, lowering health-related costs, and decreasing maintenance needs. Overall, improving air filtration in schools and universities delivers long-term benefits, including healthier indoor environments, increased energy efficiency, and reduced operational expenses. 

This article provides an overview of the current state of indoor air quality in educational facilities, the health and learning impacts associated with poor indoor air quality, along with the benefits and strategic approaches for investing in air filters that support healthier learning environments and long-term operational efficiency. 

The State of Indoor Air in Educational Facilities 

Air Quality Conditions in Classrooms

Indoor air quality in educational settings, including K-12 schools and universities, is often compromised by a variety of pollutants and structural limitations. Common issues associated with indoor air quality include:

• Elevated carbon dioxide (CO₂) levels. Overcrowded or under-ventilated classrooms can lead to excessive CO2 concentrations.
• Particulate matter. Fine airborne particles (PM1 – particles with a diameter less than 1 micron and PM2.5 – particles with a diameter less than 2.5 microns) can originate from outdoor pollution, dust or indoor activities, contributing to numerous health problems.
• Allergens. Mold spores, dust mites, and pollen are prevalent in older buildings.
• Volatile organic compounds (VOCs). Emitted from building materials, cleaning products, furnishings, and even markers, VOCs are common indoor pollutants. 

Airborne particulates and VOCs are the main air pollutants found in university settings. They are generated in laboratories that use chemicals and high-traffic areas like classrooms, common areas, and dining halls.

For example, classrooms with constant foot traffic can shed up to 500,000 particles (0.3 microns or larger) per minute, while common areas and hallways generate high particle concentrations during class changes. Dining halls can produce particulates from high-density occupancy, along with gases and odors from food preparation. Laboratories where students handle chemicals generate VOCs. 

University indoor air quality challenges can vary based on geographic region and seasonal conditions. Urban schools are more likely to experience higher levels of outdoor air pollution like vehicle emissions and industrial pollutants that drift into classrooms. Rural schools can have issues with dust and pesticides. 

Seasonal factors also influence air quality. Cold climates may reduce ventilation during winter months, causing indoor CO2 levels to rise, while warm weather or humid regions face mold and high allergen levels. These regional and seasonal variations require tailored air quality strategies that take into consideration local environmental factors and seasonal air quality fluctuations to protect the health and well-being of students and staff.

Health Impacts

Particulate matter poses serious health risks as it can penetrate deep into the lungs and even the bloodstream, causing severe health problems. Airborne pollutants can produce various adverse effects on students, faculty and staff, including headaches, allergic reactions, eye irritation, itchy skin, bronchitis, fatigue, and discomfort that results in higher absenteeism and poor concentration. 

Asthma is one of the most significant health concerns linked to poor indoor air quality. Factors such as particulate matter, mold spores, and VOCs can trigger attacks and worsen respiratory conditions. In some cases, individuals may experience sick building syndrome, where symptoms such as dizziness, nausea or irritation lessen upon leaving the building. 

Health Sensitivities Among Adult Learners

As more older learners return to higher education to meet professional and career demands, there is a diverse range of age groups and health sensitivities with educational populations. Older individuals are more likely to have underlying health conditions, such as asthma and COPD, are more adversely affected by poor indoor quality. They tend to have decreased respiratory resilience and heightened sensitivity to the environment.

Chronic Absenteeism

Inadequate IAQ increases absenteeism among students and staff. Student attendance is crucial for academic success and building relationships with peers and teachers. Chronic absenteeism impacts both educational outcomes and the financial stability of the school. When students miss school due to respiratory issues, schools lose between $7 to $15 per student per day in state funding. In addition, schools can incur costs for substitute teachers, which goes against the school budget.

Poor IAQ also negatively affects academic performance. Studies indicate a direct correlation between air quality and student cognitive performance. Elevated levels of CO₂, particularly in overcrowded or poorly ventilated classrooms, can impair cognitive abilities and concentration. 

Research shows that high levels of indoor air pollution and inadequate ventilation diminish performance across nine cognitive function domains, including basic activity level, task orientation, crisis response, information seeking, information usage, and strategic thinking. All are important for learning and conducting complex tasks. 

Why Schools and Universities Are Vulnerable

Higher education settings such as classrooms, lecture halls, dining areas and libraries, where large numbers of students and staff gather, increase the risk of airborne transmission of respiratory viruses. High occupancy density creates unique challenges for maintaining effective ventilation and indoor air quality, as it escalates the demand on ventilation systems. An increase in the number of occupants raises CO₂ levels and introduces more airborne particles and pathogens that can potentially overwhelm standard ventilation systems and compromise air quality. 

In addition, high foot traffic and constant movement can disturb settled dust particles, raising levels of particulate matter (PM) in the air. A building’s location, design, and activities also influence PM concentration. Buildings situated near roads and industrial zones are more likely to experience higher infiltration of outdoor PM due to pollutants. Activities such as cooking, printing, and laboratory work can generate indoor particulates within classrooms. In addition, poorly sealed buildings and those with inadequate filtration systems can allow more outdoor pollutants to enter indoor areas. 

Outdated HVAC systems

A national survey by the National Center for Education Statistics on public schools found that the average age of the main school building in U.S. public schools is 49 years, with 38% constructed before 1970. Additionally, one-third of public schools have never undergone major renovations. Similarly, over 50% of American college campuses were built between 1951 and 1990. This indicates that much of the nation’s education infrastructure is aging.

Older buildings often lack the modern filtration and ventilation capacity needed to maintain clean, healthy indoor air across campus environments. As campuses grow and change, the limitations of outdated systems struggle to meet today’s air quality and performance standards. Many schools and universities in the U.S. do not meet the minimum ventilation design standard outlined by the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE). 

To comply with modern standards and improve air quality, HVAC systems in many educational institutions require renewal or replacement. A 2020 Government Accountability Office report found that 41% of school districts need to update or replace HVAC systems in at least half of their schools. This represents about 36,000 schools nationwide that need updates. 

Budget Constraints

While schools and universities realize the importance of HVAC improvements, budget restraints often cause delays. The 2021 State of Our Schools report revealed a staggering $85 billion funding gap needed to properly maintain school buildings and equipment nationwide. 

Despite flat budgets and rising operating costs, schools and universities should actively pursue alternative funding sources to modernize HVAC systems. Delaying these upgrades poses serious risks to health, learning outcomes, and overall building safety. 

Investments in modernizing HVAC systems with premium air filtration will not only improve indoor environments but also positively affect learning environments, boost student and staff productivity, lower maintenance costs and reduce energy costs. 

What Are Premium Air Filters? 

While HVAC systems bring fresh air indoors through ventilation, this process does not eliminate airborne pathogens. While ventilation helps dilute contaminants, air filtration removes particles such as dust and aerosols from the air before it circulates in indoor spaces. While only a single component, air filters impact almost every performance feature of the HVAC system. 

MERV and HEPA

Air filters are evaluated based on how effectively they capture small airborne particles, using the Minimum Efficiency Reporting Value (MERV) rating system. For optimal performance, schools and universities should implement air filters with MERV ratings between 13 and 16, specifically those marked with a MERV-A designation. This MERV-A label signifies that the filter will sustain its efficiency throughout its operational lifespan. Air filters rated a minimum of MERV 13/13A capture an average of 85% of particles 1 micron and larger when properly installed in HVAC systems. High-Efficiency Particulate Air (HEPA) filters are even more effective, capable of removing at least 99.97% of particles as tiny as 0.3 microns.

Carbon Filtration

Molecular filters with activated carbon are effective in removing gases and odors from the air through a process called adsorption. In this process, gas-phase molecules adhere to the surface of the activated carbon, which has an extremely high surface area due to its porous structure.

These filters are highly effective for controlling odors and chemical contaminants in:

• Science laboratories:  remove chemical fumes and VOCs. 
• Cafeterias:  control food odors and cooking by-products.
• Art rooms or industrial classrooms that utilize glues, paints or solvents. 

Prefilters and Final Filters

In HVAC systems, prefilters and final filters work together in a multi-stage filtration process to effectively clean environments with different pollutants. Using a combination of different filters targets specific contaminants such as allergens, mold, and odors. 

Prefilters are often one, two, or four-inch pleated panel filters and serve as the first line of defense by removing large airborne particles such as dust, pollen, and lint. They are installed upstream of other filters in the air handling unit. For example, in a school setting, a MERV-8A or 9A prefilter removes larger particles before they accumulate on the heating or cooling coils, which reduces heat transfer effectiveness or before they build up on the final filter, reducing airflow into classrooms. 

Final filters are installed downstream from the prefilter and before air enters the ductwork and is delivered into the building space. These filters typically have a MERV rating of 13-16 and are designed to  remove smaller airborne contaminants. They ensure that the HVAC  system delivers cleaner, safer air into the classrooms and can be considered as the last line of defense.  

Integrated Systems vs. Standalone Units

Integrated filters are built directly into existing HVAC systems and can be upgraded from standard to premium filters, depending on system compatibility. Most commercial HVAC systems have the framing support to accommodate filters with MERV ratings of 8- 16. However, standard HVAC systems in schools typically cannot accommodate HEPA filters due to fan design limitations and pressure drop issues. Installing HEPA filters often requires significant modifications or specialized air handling units to maintain airflow and ventilation rates. 

In such cases, standalone units, also known as air purifiers or air cleaners, are ideal. When equipped with HEPA filters and activated media filters, these portable units effectively reduce particulate matter and gaseous pollutants. They can be smaller plug-and-play units that require minimal installation and maintenance, or they can be larger ceiling mounted units for athletic spaces such as gyms, locker rooms, and indoor swimming pools or larger spaces such as auditoriums. Air purifiers and cleaners can be powerful filtration devices that deliver performance beyond the capabilities of most existing school HVAC systems.

Camfil’s Premium Air Filters and Air Cleaners  Routinely Used in Schools and Universities

• 30/30 Dual 9 or Farr 30/30 panel filters for prefiltration in multi-stage units.
• AQ13 panel filters for single-stage units configured to hold air filters no greater than 4 inches in depth and supplying air to human-occupied, but non-critical spaces such as offices. 
• Durafil ES3 V-bank style air filters for final filters in multi-stage units supplying air to human-occupied or production areas not requiring HEPA filtration.
• CityCarb I V-bank style particulate and molecular air filter that combines MERV 14A particle removal efficiency and ozone removal efficiency of 90%. 
• Absolute VG V-bank style filters for areas where up to 99.99% @ 0.3 micron HEPA filtration is required and the air handling unit is configured for box-style HEPA filters.
• CamCleaner CC500 portable air purifier with HEPA filtration. 
• CamCleaner CC X-Series industrial air cleaner with modular construction capable of both particulate and molecular filtration in large spaces. 

Improved Indoor Air Quality – Health and Cognitive Benefits 

IAQ plays a vital role in promoting student health, cognitive development, and academic performance. By prioritizing clean air, schools and universities can create healthier, more effective learning environments.

Health Benefits for Educational Communities

Recent studies have shown that upgrading HVAC systems and integrating HEPA cleaners in classrooms provides health advantages. Reduced transmission of airborne pathogens minimizes the spread of colds and flus while lowering the incidence of asthma and allergy flare-ups. Improved IAQ also supports better respiratory health and strengthens the immune system. 

Academic Performance Enhancement

The COGfx study, a multi-phase research initiative led by Harvard University, Syracuse University and SUNY Upstate Medical University, found that improved IAQ led to a 101% increase in cognitive test results. 

Key academic benefits of well-ventilated classrooms include:

• Improved concentration, memory and cognitive performance. 
• Reduced absenteeism and disruption.
• A more comfortable environment aligned with academic achievement.

Staff Well-Being and Performance

Classroom air quality improvement also supports the health, performance, and satisfaction of teachers and school staff. Cleaner air reduces sick leave, ensuring consistent instruction in educational programs. 

Healthier, more comfortable working conditions enhance productivity, boosts morale and job satisfaction. When educators feel healthier and more engaged, overall quality instruction and school culture improve, leading to higher job satisfaction and better job retention. 

Energy Efficiency and HVAC Performance in Educational Facilities 

Energy Efficiency Gains

HVAC systems represent the majority of energy consumption in schools and universities. Upgrading to premium, high-efficiency filters will have a big impact on system performance and energy efficiency, resulting in major savings on utility costs.

Optimized System Load for Educational Buildings

High-efficiency filters enhance the performance of HVAC systems by decreasing airflow resistance and minimizing pressure drop. As a result, less energy is needed to maintain consistent indoor temperatures and air quality in classrooms, lecture halls and other campus areas, especially during high-demand periods. 

These advanced filters are also more effective in capturing airborne contaminants, reducing the load on HVAC systems. This not only reduces cooling energy requirements but also contributes to cleaner indoor air. By maintaining consistent airflow, minimizing pressure fluctuations, and reducing strain on critical components, these filters help extend the lifespan of HVAC systems.

Energy Cost Savings for Educational Budgets

Effective filter management lowers cooling and heating costs by keeping systems clean, efficient and free from dirt and debris. Clean filters allow air to flow more efficiently, reducing strain on equipment and improving energy efficiency. By maintaining optimal system performance throughout the year, schools can reduce heating costs in the winter and cooling costs in the summer. 

Schools that upgrade to efficient air filters  can cut HVAC-related energy consumption by up to 80%, lowering utility costs. For example, by switching to premium filters, Montgomery County Schools in Pennsylvania captured up to 85% more airborne particles. This resulted in healthier learning environments and achieved a 15- 18% energy savings, which translates to hundreds of thousands in annual savings. 

Utility savings such as these allow more funding to be allocated to other educational programs and maintenance rather than utility bills. 

Sustainability Benefits for Educational Institutions

By adopting premium HVAC filters, educational institutions can reduce their carbon footprint. These advanced filters enable HVAC units to operate with lower energy demands, helping to reduce greenhouse gas emissions associated with heating, cooling, and water purification processes across campus. 

This results in a cleaner, greener campus that aligns with the values of environmentally-conscious educational institutions. It also demonstrates corporate social responsibility to stakeholders.

Additionally, installing premium filtration systems can contribute directly to Leadership in Energy and Environmental Design (LEED) certification by earning points in categories such as indoor environmental quality.

Maintenance Cost Savings – Labor and Materials 

By reducing airborne dust and particulate matter, premium filters help to prevent buildup in HVAC systems and prolongs the lifespan of HVAC components. This leads to fewer repairs and replacements, which reduces maintenance costs, minimizes system downtime, and lowers labor needs. 

High-quality air filters also often require less frequent replacement. When used in combination with a prefilter, final filters can last 6 to 12 months longer than standard filters due to their high-quality materials and enhanced design for airflow efficiency. This extends service intervals and reduces operational costs. Fewer filter changeouts mean less disruption to classroom activities and campus operations. 

Labor Hours and Staffing Optimization

By extending filter life, premium filtration systems reduce the frequency of replacements, reducing the time technicians spend on routine maintenance. This not only cuts labor costs but frees technicians to spend time on more urgent, complex maintenance issues, improving overall facility performance. 

Consistent filtration performance can improve staff productivity by focusing on educational support activities. It also reduces unplanned repair costs and reduces emergency maintenance calls during critical educational periods. 

Procurement and Inventory Efficiency for Educational Institutions

Standardizing high-efficiency filters across campus allows educational institutions and school districts to negotiate volume-based pricing for bulk purchases. The longer lifespans of premium filters simplify inventory management by reducing the number of SKUs and change cycles. And with fewer filter types and less frequent replacement, facility maintenance areas require less physical storage space for HVAC filter inventory. Standardized purchasing and reduced frequency of changeouts streamlines the procurement process with fewer requisitions, less manual oversight and more precise budgeting. 

Disposal Cost Savings and Environmental Benefits

Fewer filter replacements generate less waste, resulting in reduced filter disposal frequency. This, in turn, means fewer dumpster pickups, reduced landfill fees, and lower hauling and labor charges. 

The decreased volume of non-biodegradable materials sent to landfills supports sustainability initiatives, carbon reduction targets and compliance with green building standards such as LEED or Energy Star.

Waste reduction efforts also provide real-world opportunities for environmental education. By using filter optimization projects, educational institutions can demonstrate environmental responsibility and engage students in sustainability discussions using campus-based case stories. 

Cost-Benefit Analysis for Educational Investment 

While premium filters have a higher upfront cost compared to standard filters, they offer significant long-term financial and operational advantages. Standard filters, with their low initial cost, quickly become clogged, resulting in dramatically higher energy consumption as well as increased labor and disposal costs due to their short service life. The costs of premium filters are offset by extended service life, improved HVAC efficiency and reduced inventory and maintenance. 

Instead of simply evaluating filters based on price, examining the total cost of ownership (TCO) can provide a clearer picture of their overall value. This evaluation should include operational costs, energy consumption, operational gains, labor and disposal costs. Software such as Camfil’s LCC Green Software can be used to calculate the TCO of different filters under various conditions using real-life data. 

Budget Reallocation Opportunities

Investing in premium air filters creates opportunities for budget reallocation within educational institutions. The overall savings gained from improved energy efficiency and reduced maintenance costs can be redirected to support different institutional priorities, such as:

• Academic program improvements, such as curriculum development and staff training.
• Facility upgrades that modernize infrastructure and help attract and retain students.
• Technology improvements that further reduce energy and maintenance costs while equipping learning environments with the latest digital tools. 

Implementation Considerations for Educational Facilities 

Upgrading to premium air filters requires a strategic, multi-step approach. This process should include a comprehensive assessment, proper filter selection, staff training and ongoing performance monitoring. 

Assessment and Planning for Educational Environments

The first step in improving IAQ at schools is assessing their needs. It involves:

• Conducting an IAQ audit to evaluate pollutant sources, ventilation effectiveness and particulate levels to determine filtration requirements.
• Performing an occupancy-based analysis to outline occupancy patterns and usage throughout different buildings.
• Evaluating the current ventilation systems and poor circulation areas.

It is also important to establish baseline performance metrics to enable ongoing performance tracking, ROI calculations and alignment with sustainability reporting. 

Air Filter Selection for Educational Applications

Choosing the right filter requires a thorough evaluation of system compatibility, facility needs, and infrastructure diversity. 

Key considerations include:

• Conducting a compatibility check of the HVAC system to determine whether it can support premium filters without compromising performance.
• Assessing filtration performance based on the educational environments, such as minimizing airborne contaminants, controlling allergens and ensuring consistent IAQ in high-occupancy spaces.
• Considering the age and capacity of HVAC systems in older buildings, which may have limited airflow. Upgrades or system modifications may be required to accommodate high-efficiency filters.
• Selecting the filter solutions that adapt to the varying designs of different buildings, which can affect airflow requirements. 
• Consider adding individual room air purifiers or industrial air cleaners for larger spaces where needed. 

Training and Staff Buy-In for Educational Teams

The successful implementation of premium air filters depends on staff engagement, training and change management. The facilities and maintenance team should be educated on new filtration methods and goals through targeted training sessions. This should focus on filter specifications and proper installation, monitoring air quality improvements, and troubleshooting pressure drops or airflow issues.

Standard operating procedures should define inspection and replacement schedules for maintenance teams. Additionally, communication strategies should be developed to inform staff and stakeholders on the purpose and benefits of premium filter upgrades, addressing any potential resistance from faculty and administrative leadership. 

Monitoring Results and Performance Validation

Ongoing assessments enable schools to adapt their air quality management strategies in real time, ensuring the health and safety of students and staff. By utilizing advanced sensors and monitoring systems, schools can collect data on key pollutants including VOCs, particulate matter and CO₂ levels. 

Analyzing this data allows for early detection of emerging issues, identification of trends, and timely adjustments to ventilation systems or filtration efficiency. These proactive measures not only protect health but also enhance the learning environment by reducing distractions and discomfort caused by poor educational building air quality.

Clean indoor air is critical to the health, academic performance and productivity of staff and students in schools and universities. With approximately 51 million people occupying school buildings on any given day, IAQ must be a top priority in the mission of educational facilities. School air filtration benefits not only include improved air quality, but lower energy consumption, reduced maintenance and inventory costs, and enhanced comfort and safety.

For many older educational facilities that cannot accommodate major HVAC designs, premium air filters offer a practical, high-impact solution. They represent a smart, future-ready investment in creating healthier learning environments and promoting educational excellence. 

Camfil offers clean air solutions tailored to address air quality issues in educational institutions. To learn more about our premium air filtration capabilities for schools and universities, visit Camfil’s schools and universities clean air information page or connect with a Camfil expert who can provide product knowledge and support in upgrading the filtration capacity of your HVAC system. 

 

¹ https://www.epa.gov/iaq-schools/reference-guide-indoor-air-quality-schools

² https://www.fmlink.com/survey-colleges-issues-effective-iaq-solutions/

³ https://www.epa.gov/pm-pollution/particulate-matter-pm-basics

⁴ https://blog.csba.org/national-survey-school-facilities/

⁵ https://www.asumag.com/resources/white-papers/article/20853544/the-dilemma-of-aging-facilities-strategies-for-future-proofing-a-higher-education-campus

⁶ https://pmc.ncbi.nlm.nih.gov/articles/PMC8789458/

⁷ https://www.gao.gov/products/gao-20-494

⁸ https://www.incidentiq.com/blog/2024-2025-k12-facilities-management-survey

⁹ https://www.asumag.com/energy/indoor-air-quality-iaq/article/55276022/hvac-upgrades-enhance-air-quality-in-school-facilities

¹⁰ https://healthybuildings.hsph.harvard.edu/research/indoor-air-quality/cogfx/

¹¹ https://airsysnorthamerica.com/a-school-hvac-upgrade-is-it-really-necessary/

¹² https://centralplumbinghvac.com/why-montgomery-county-schools-are-switching-hvac-filter/

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Texas Charter School District Achieves Major Cost Savings with Innovative Filtration Strategy, New Camfil Case Study Video Reveals

Riverdale, NJ — Camfil USA has released a compelling new case study video documenting how one of Texas’ largest public charter school districts dramatically reduced maintenance costs and improved facility operations by implementing high-performance air filtration systems. The video, featuring firsthand testimony from facility management leadership, provides unprecedented insight into the operational challenges facing large educational institutions and the strategic solutions that deliver measurable economic impact.

International Leadership of Texas (ILTexas), a multilingual K-12 charter school network operating multiple campuses across the state, faced significant maintenance challenges common to large educational institutions: limited budgets, insufficient staffing, and overwhelming filter replacement schedules that consumed valuable maintenance resources.

“Educational institutions nationwide are grappling with similar facilities management challenges,” noted John Davidson, Branch Manager at the Camfil office in Dallas, TX. “This documented case study provides tangible evidence of how strategic filtration decisions can transform maintenance operations while improving indoor air quality for students and staff.”

Documented Transformation in Maintenance Operations

The case study video captures the dramatic operational impact experienced by the school district after transitioning to high-performance filtration solutions:

• Reduction in filter change frequency from monthly replacements to quarterly or nine-month intervals
• 95% decrease in maintenance labor hours dedicated to filter changes (from 24 man-hours to just 1)
• Reallocation of maintenance resources to critical equipment maintenance, including HVAC coil cleaning, belt replacement, lighting, and kitchen equipment
• Elimination of storage requirements for large quantities of replacement filters
• Six-figure annual savings in maintenance labor costs

“When they said nine months, I was like, ‘You guys are crazy. Our units aren’t going to be able to handle that,'” the facilities director states in the video. “So we tested it out at a campus . . . It takes about two days for us to change filters. That’s 24 days of man-hours, and we’re now able to do it in one.”

Evidence-Based Decision Making in Educational Facility Management

The video highlights the importance of performance validation and data-driven decision-making in educational facility management. When a mechanical contractor raised concerns about the extended-life filters during a service call, Camfil dispatched engineers to conduct comprehensive airflow testing, which confirmed the filters were performing as promised.

“We were able to prove to the mechanical contractor that it was the VFD that was causing the issue,” explains the facilities director in the video. The documentation of actual performance over time provided crucial validation for the district’s innovation in maintenance practices.

For educational institutions operating under tight budgets, the case study addresses the common misconception that lower-priced filters reduce overall costs. Despite the higher initial investment in premium filtration, the school district achieved substantial net savings through dramatic reductions in labor costs and replacement frequency.

“We’re saving hundreds of thousands of dollars in man-hours every year changing filters because we don’t have to as often,” concludes the facilities director. “Luckily, International Leadership of Texas gives me autonomy to make those business decisions . . . it was a no-brainer for us to make that switch.”

Educational Focus on Multilingual Excellence

The case study also highlights ILTexas’s distinctive educational mission of providing trilingual education in English, Spanish, and Mandarin—languages that enable graduates to communicate with approximately 90% of the world’s population. The school system’s designation of Mandarin as a “national security language” underscores the institution’s forward-thinking educational philosophy.

By reducing maintenance burdens through smarter air filtration strategies, the school can direct more resources toward its core educational mission while maintaining healthy learning environments for students and staff.

The comprehensive case study video is now available on Camfil USA’s YouTube channel and website, offering facility managers in educational settings a valuable resource for evaluating potential operational improvements.

About Camfil USA

For more than half a century, Camfil has been helping people breathe cleaner air. As a leading manufacturer of premium clean air solutions, Camfil provides commercial and industrial systems for air filtration and air pollution control that improve worker and equipment productivity, minimize energy use, and benefit human health and the environment. Headquartered in Stockholm, Sweden, Camfil operates 29 manufacturing sites worldwide with approximately 5,700 employees serving customers across diverse industries in more than 35+ countries.

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Clean Air: A Key Factor for Thriving University Fitness Facilities and Improved Student Wellness

Breathing is often overlooked but plays a vital role in optimizing workout performance. Proper oxygen intake fuels the body and supports sustained energy, aiding muscle growth and recovery. However, the quality of the air being inhaled matters just as much as breathing technique.

This article examines the importance of indoor air quality (IAQ) in campus fitness centers. Poor IAQ can hinder performance, increase fatigue, and even pose health risks for students and staff. Ensuring clean, well-circulated air in these spaces is essential for creating a safe and effective environment for fitness and wellness.

The Importance of Physical Activity for College Students

Physical activity plays a crucial role in the overall well-being and academic success of college students. Incorporating movement, such as yoga, weightlifting, running, dancing, and team sports, into daily routines has been linked to:

• Improved sleep quality [1] 
• Higher energy levels, lower fatigue, and an enhanced sense of vitality [2] 
• Increased productivity and cognitive performance [3]

Regular exercise can even be as or more effective in treating mild to moderate symptoms of depression as selective serotonin reuptake inhibitors (SSRIs), a common first-line medication for depression. Exercise in combination with these medications has been shown to increase its effectiveness in individuals with and without comorbid diagnoses [4]

For college students adapting to new environments and intense workloads, physical activity acts as a critical tool to sustain balance and resilience, therefore reducing overall psychological success. With a healthy environment in which to engage in regular exercise, students can develop healthier habits that contribute to long-term academic and personal success.

How Bad Air Quality Impacts Athletic Performance

Numerous studies highlight the detrimental effects of air pollution, not only outdoors but also indoors in recreational settings. Poor air quality can:

• Decrease endurance due to the presence of fine particulate matter (PM2.5) that restricts lung function. 
• Slow reaction times and reduce cognitive focus, especially during high-intensity workouts [5] 
• Diminish long-term athletic performance, leading to severe respiratory strain or inflammation. [6] 

For the broader student body, these effects can offset the positive effects of exercise and make the overall experience unpleasant, therefore reducing students’ motivation to maintain healthy physical activity. Regular exercise is an important aspect of maintaining a healthy lifestyle, but when done in polluted environments, it can have negative consequences on students’ health and well-being.

Implications of Poor IAQ for Student Athletes

For student athletes, the stakes are particularly high. Poor IAQ jeopardizes:

• Performance Stability: Air pollution impacts both aerobic accomplishments and strength-based activities [5] 
• Recovery Rates: Contaminated environments elevated with carbon particulates increase oxidative stress in the body, delaying muscle recovery.
• Long-Term Lung Health: Exposure to pollutants may render athletes more susceptible to chronic respiratory conditions later in life [6]

A 2024 study conducted by researchers at Brown University examined 16 years of marathon runners’ finish time data—encompassing several million data points—and concluded that exposure to PM2.5 during a race was significantly correlated with slower finish times. [6]

Students who train in compromised air frequently find it harder to meet their full athletic potential within the safety of campus facilities. Because of its impact on individual athletes’ overall health and athletic performance, poor IAQ may impact a team’s standing in their NCAA division. 

Common Pollutants in University Gyms and Recreational Spaces

While you might not think that air pollution is a cause for concern in your school’s fitness center, indoor air pollution in these environments is surprisingly common and often goes unnoticed. 

Indoor pollutants in fitness centers typically originate from both internal and external sources and are dependent on several factors, including geographic location and other uses of the building. A university recreation center at a large school housed in its own building in close proximity to a highway, for example, will have different pollution concerns than a smaller fitness center in a rural location housed in the same building as a dining hall or dormitories.

Pollutants often include:

• • Particulate Matter from overcrowded spaces, poor ventilation systems, and outdoor sources.
  • Dust and Allergens generated by heavy traffic on gym flooring or unclean HVAC systems.
  • Airborne Pathogens that can lead to increased infection rates of illnesses such as COVID-19 across campus
  • Volatile Organic Compounds (VOCs) emitted from cleaning solutions, rubber mats, and worn-out exercise equipment.

Although these pollutants might seem harmless initially, their accumulation can contribute to nausea, breathing difficulties, and even long-term cardiovascular issues.

Solutions to Improve IAQ in University Fitness Centers

Ensuring clean, breathable air starts with proactive measures to integrate healthier practices. These strategies can include:

1. Upgrade Your HVAC System

Efficient ventilation systems are critical for removing stale air, maintaining optimal oxygen levels, and blocking external pollutants.

2. Install High-Efficiency Air Filters 

Using HEPA filters and high MERV-A rated filters in air filtration systems can trap harmful particles like viruses, bacteria, PM1 and PM2.5 particles, safeguarding both students and staff.

3. Use Air Quality Monitors

Real-time monitoring devices can flag sudden spikes in pollutants, allowing for immediate corrective actions.

4. Consider Chemical Use

Keeping equipment clean is important for safety and hygiene in fitness centers, but harsh cleaning chemicals emit VOCs that cause both immediate and long-term respiratory health impacts. Adopting environmentally-friendly and/or low VOC cleaning supplies can help mitigate this risk, but air filters designed to control molecular contaminants (sometimes referred to as molecular or gas-phase filters) provide that extra layer of protection that could allow the athlete to perform at their highest level.

5. Consult with an Air Filtration Specialist

Professionals can provide tailored solutions after conducting audits, identifying specific IAQ concerns, and suggesting interventions aligned with fitness center needs. Summer presents a unique opportunity for university facilities managers to initiate strategic changes, such as implementing premium air quality solutions, with relatively little interruption to campus life. 

READ MORE: Why Summer Is the Smartest Time for HVAC Filter Changeouts in Schools and Universities 

Prioritizing IAQ is Essential for a Healthy Campus

At universities, recreation and fitness centers aren’t just facilities; they are hubs where students recharge, connect, and improve both mental and physical health. By prioritizing IAQ, universities demonstrate a commitment to their community’s well-being while empowering students to achieve their fitness aspirations.

Take your next step toward cleaner, healthier indoor environments by consulting an air quality specialist. Together, you can craft a healthier future for campus fitness.

About Camfil 

The Camfil Group is headquartered in Stockholm, Sweden, and has 29 manufacturing sites, six R&D centers, local sales offices in 35+ countries, and 5,700 employees and growing. We proudly serve and support customers in a wide variety of industries and communities across the world. To discover how Camfil USA can help you to protect people, processes, and the environment, visit us at www.camfil.us.

 

Sources: 

[1] Alnawwar, M. A. (2023). The effect of physical activity on sleep quality and sleep disorder: A systematic review. Cureus, 15(8). https://doi.org/10.7759/cureus.43595

[2] Wender, C. L. A., Manninen, M., & O’Connor, P. J. (2022). The Effect of Chronic Exercise on Energy and Fatigue States: A Systematic Review and Meta-Analysis of Randomized Trials. Frontiers in Psychology, 13(13). https://doi.org/10.3389/fpsyg.2022.907637

[3] Davidson, M. (2023, June 6). The Hidden Benefits of Clean Air: Exploring the Link Between Better Indoor Air Quality and Improved Productivity. Camfil Clean Air Blog. https://cleanair.camfil.us/2023/06/06/the-hidden-benefits-of-clean-air-exploring-the-link-between-better-indoor-air-quality-and-improved-productivity/

[4] Noetel, M., Sanders, T., Gallardo-Gómez, D., Taylor, P., & Cruz, B. del P. et al. (2024). Effect of exercise for depression: Systematic review and network meta-analysis of randomised controlled trials. The BMJ, 384. https://doi.org/10.1136/bmj-2023-075847

[5] Maldarelli, C. (2025, February 28). How Bad Air Quality Slows Down Marathon Runners. Scientific American. https://www.scientificamerican.com/article/how-bad-air-quality-slows-down-marathon-runners/

[6] Fleury, E. S., Bittker, G. S., Just, A. C., & Braun, J. M. (2024). Running on Fumes: An Analysis of Fine Particulate Matter’s Impact on Finish Times in Nine Major US Marathons, 2003–2019. Sports Medicine, 55. https://doi.org/10.1007/s40279-024-02160-8

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Clean Air Solutions for Food Processing Facilities for Safety, Compliance and Efficiency

Food processing facilities face unique and complex challenges in maintaining clean air. The movement of raw materials, open processes, fluctuating temperatures and high humidity all create ideal conditions for airborne contamination. Standard HVAC systems and filters simply aren’t enough to protect sensitive production zones from bacteria, mold spores and allergens. 

Adopting advanced air filtration solutions is essential to meeting regulatory requirements and consumer demand for food safety standards. From preventing cross-contamination to reducing energy costs and extending equipment life, the right filtration systems support nearly every facet of food production.

The relationship between air quality and food product integrity is intricate. Airborne contaminants can settle on surfaces and ingredients, directly impacting shelf life, taste and safety. This is why air handling must be treated as a proactive strategy, not a reactive remedy. 

Read further to learn how a comprehensive clean air strategy combining high-efficiency air filters, air cleaners and proven contamination control practices can protect food safety, optimize performance and secure regulatory compliance.

Contaminants in Food Processing Facilities 

The effects of contamination in food processing are twofold, threatening both the health of consumers and the bottom line of producers. From a financial perspective, contamination can lead to significant product loss during production, increased waste, reduced shelf life and costly product recalls and returns. These expenses can place a substantial burden on a facility’s profitability and undermine brand reputation which is very difficult to recover

Far more critical, however, is the risk that contaminated food poses to public health. Airborne pathogens, bacteria and viruses can cause a wide spectrum of foodborne illnesses, ranging from mild gastrointestinal discomfort to life-threatening infections. Vulnerable groups, including infants, young children, the elderly, pregnant women and individuals with weakened immune systems, face the highest risk of severe illness or complications.

Particles such as dust, bacteria, mold, and yeast can infiltrate products and cause health problems for consumers. One of the most common vectors for contamination is bioaerosols, microscopic liquid or solid particles suspended in the air that carry microbes. Bioaerosols are frequently generated when microbial sources are disturbed. For example, high-pressure hoses used to clean outside holding pens can propel particles into the air, where they remain suspended for minutes or hours and depending on airflow and particle size, can be drawn into the plant through nearby poorly filtered HVAC units. Other common contributors include unfiltered compressed air lines, poorly maintained HVAC systems and even foot or vehicle traffic moving through stagnant water. Bioaerosols can also originate outside the facility, traveling from neighboring buildings or fields before settling onto contact surfaces or directly onto food.

Among the most prevalent bioaerosol contaminants are microorganisms such as Salmonella, E. coli, Listeria, Bacillus and Clostridium. Yeasts and molds are also frequently encountered, especially in environments where bacterial growth is inhibited, like foods preserved with high salt concentrations. Viruses, including norovirus and hepatitis A, further complicate contamination control due to their resilience and ease of transmission.

To combat these risks, food processing facilities must be designed and maintained to limit exposure to airborne contaminants. Effective measures include optimizing the placement and performance of HVAC systems, maintaining positive air pressure in sensitive areas and implementing high-efficiency air filtration capable of capturing and neutralizing bioaerosols. Coupled with rigorous sanitization protocols and environmental monitoring, these strategies form a critical line of defense to safeguard both product integrity and public health.

Regulatory Standards Governing Air Quality in Food Processing

Maintaining clean air at food processing facilities isn’t just a best practice, it’s a regulatory imperative enforced by multiple agencies and frameworks. While no single rule prescribes universal air quality thresholds for every product, the FDA, USDA and HACCP principles collectively define stringent requirements and protocols to prevent contamination and protect public health.

The FDA sets the baseline for most human food facilities under the Current Good Manufacturing Practice (CGMP) regulations, detailed in 21 CFR Part 117. These rules mandate that buildings be designed and maintained to prevent airborne hazard contamination. Facilities must have adequate ventilation, filtration and airflow control to minimize vapors, odors and particulates that could compromise food safety. Under the Food Safety Modernization Act (FSMA), processors must also establish risk-based preventive controls, which often include strategies for controlling airborne contaminants.

The USDA regulates meat, poultry, and egg products, requiring facilities to comply with 9 CFR Part 416 sanitation standards. These rules stipulate that ventilation systems must effectively control condensation, noxious fumes and airborne contaminants. USDA inspectors routinely verify that ventilation and air handling equipment are sanitary, well-maintained and sufficient to prevent product adulteration.

Hazard Analysis and Critical Control Points (HACCP) programs are mandatory for certain food products, but many processors choose to follow those guidelines on their own accord.  HACCP is an internationally recognized framework requiring facilities to assess risks in their processes and establish preventive measures where necessary. For example, if a hazard analysis identifies potential for airborne pathogens or allergens, the facility must define controls such as HEPA filtration, positive air pressure zones or specialized air change rates to mitigate the risk.

Taken together, these regulations, standards and recommendations underscore a clear message: clean air is fundamental to food safety, regulatory compliance and consumer trust. Well-designed ventilation systems, validated air filtration technology and rigorous environmental monitoring enable food processors to demonstrate that their facilities are equipped to control airborne hazards at every step.

Role of Air Filtration in Controlling Contamination 

An air filter is just one part of the broader, more sophisticated HVAC system that governs the ventilation within a food processing facility. This system is responsible for supplying air that meets precise requirements for temperature, humidity and pressure, all of which are essential to maintaining a safe product and a healthy working environment.

The choice and performance of an air filter have a direct influence on food safety programs and those tasked with upholding strict sanitation standards. Overlooking the importance of carefully evaluating a filter’s capabilities can lead to consequences far beyond contamination risks. Ineffective filters can drive up energy consumption, jeopardize positive pressure in critical process zones, increase equipment wear, raise labor demands and generate excessive waste headed to landfills, all of which escalate operational costs and erode a facility’s efficiency.

Generally speaking, food processing facilities rely on as many as four distinct categories of equipment, designed for air to flow through and contain air filters..  The first is the primary HVAC system, usually installed on the roof, which supplies fresh air and regulates the building’s temperature and humidity. The second category would be make-up air handling units, which provide fresh outside air into the facility. These units do not have heating or cooling capabilities. A third includes process filters, specialized filtration components that protect the air entering specific pieces of equipment. A coalescing filter is a type of process filter. Another type would be a  HEPA filter safeguarding aseptic systems. The last type consists of independent, stand-alone air cleaners, which are often positioned near zones that are prone to generating contaminants.

Even the most carefully engineered air handling infrastructure will fall short without selecting the right filters for each application. To effectively trap bioaerosols and other airborne hazards, facilities should use high-efficiency filters. It is important to choose filters carrying both a MERV and MERV-A rating. The “A” designation—for example, MERV 14-A—indicates the filter has been evaluated under conditions that reflect real-world use, ensuring its performance remains consistent over time rather than declining as it loads with particles.

In areas that are known sources of internal contamination or where maintaining elevated air pressure is critical, stand-alone air purification systems can provide an additional layer of defense against airborne pollutants.

Ultimately, the responsibility to produce safe food and beverages falls on the facility operators. They must determine which filtration approach best fits specific processes, whether that means specifying certain MERV ratings, integrating HEPA filters or deploying supplemental air purification units. Because no two operations are identical, there is no universal solution. For this reason, partnering with an experienced air filtration professional is strongly recommended to ensure you select the right air filters.

The Necessity of Positive Pressure 

An essential element of any effective food safety strategy is controlling the pressure and the direction in which air moves throughout the facility. Ideally, the air pressure inside a food processing plant should be positive, meaning it is higher than the pressure outside the building. This pressure differential drives air outward through open doors, windows and even small structural gaps, acting as a protective barrier that keeps airborne contaminants from entering the building envelope.

Within the facility, pressure gradients should be carefully managed so that the most critical production areas maintain the highest pressure levels, while less sensitive zones have lower pressures. This setup ensures that any internally generated particles or microbes are contained and flow away from high-risk areas, preventing contaminants from traveling, for example, from a storage warehouse into the processing line.

Air that has been conditioned for temperature and humidity as well as filtered to a high level,  is a very valuable asset for a food processor.  Camfil’s advanced air filters are engineered to deliver the lowest average pressure drop to allow greater volumes of air to be moved efficiently, helping maintain strong positive pressure throughout the building. Increased airflow also provides the flexibility to control and direct air currents in ways that support the highest standards of food safety, tailored to the unique configuration of each plant.

Clean Air Zones – Designing a Controlled Airflow Strategy

Unlike other manufacturing industries, food processing facilities handle an exceptionally diverse range of raw materials, from hot and cold ingredients to raw, cooked and even slaughtered products. Every stage of production comes with its own set of contamination risks, making it essential to choose air filtration solutions precisely matched to each process step.

At the front end, incoming raw materials are typically sorted, sifted and prepped, activities that often create substantial product dust. This airborne dust is captured at the source through localized hoods and conveyed through ductwork to cartridge-style dust collectors positioned outside the building.

The core processing zones of the facility are where the most critical production operations occur. Here, the greatest volume of clean, conditioned air is delivered, usually by rooftop air handling units equipped with multiple stages of filtration to protect against contaminants. Process machinery such as aseptic packaging lines rely on this clean ambient plant air as their intake source, making filtration performance in these areas especially vital.

Spaces dedicated to quality control and taste testing are commonly segregated from production zones and safeguarded with HEPA filters to preserve product integrity. Temporary storage rooms and finished goods warehouses, including cold storage facilities, demand close management of both temperature and airflow to maintain food safety standards.

Beyond production spaces, a food processing plant also includes offices and administrative areas that support daily operations. These environments house a facility’s most valuable asset, its people, and ensuring employees have access to clean, healthy air is equally important as protecting the product itself.

Key Camfil Solutions for Food Industry Applications

When it comes to protecting food quality and ensuring compliance, Camfil offers a comprehensive suite of air filtration and dust collection solutions engineered specifically for the unique demands of food processing environments. From limiting microbiological cross-contamination caused by mold, bacteria, and viruses to capturing fine dust and volatile organic compounds, Camfil’s air filtration products help safeguard every stage of production. With a portfolio designed to meet the strictest industry standards, Camfil empowers food manufacturers to maximize operational excellence, achieve high energy efficiency and keep total cost of ownership low.

As noted above, air filtration solutions must be customized for each specific facility for the best operational outcomes. Our general air filtration recommendations are: 

• Pre-filters rated MERV 8 for initial contaminant capture
• Final filters rated MERV 13A through 16A for critical applications
• HEPA filters for sensitive food production areas

Camfil Product Applications:

• Durafil ES3 V-bank style air filters:  High-capacity solutions for demanding food processing environments
• Hi-Flo ES bag filters:  Reliable performance for large-format food manufacturing facilities
• Cam-Flo XLT bag filters:  Specialized solutions for high moisture environments and older AHU systems with weather protection challenges
• CamCleaner Horizontal air purifier:  Portable air cleaning for targeted contamination control and facility flexibility
• Megalam and Absolute HEPA air filters:  Tested and certified HEPA filters for aseptic, dairy and extended-shelf-life food processing

Case Studies and Success Stories 

• One of North America’s largest food companies, also one of the nation’s leading specialty potato providers to restaurants and other food service establishments, was experiencing high contaminant levels over the batter and fry lines during sweet potato production. Camfil created a customized solution for high-, medium- and low-contamination areas. Read the full story.
• A well-known baking facility in Pennsylvania faced significant challenges with processes that produced excessive flour dust. These airborne particles accumulated on equipment surfaces and migrated into the return air exhaust ductwork, as well as other parts of the ventilation system. Camfil surveyed the site and installed two CamCleaners with 2,000 CFM capacity each in optimal areas to capture the airborne flour and improve airflow patterns. High-quality air filters were installed in the rooftop air handling units to improve overall air filtration. Read the full story.
• One of America’s largest beef processing plants was struggling with contaminants infiltrating food production areas due to subpar air filter performance. Frequent filter replacements had become a costly, time-consuming burden, while overall airflow and air quality were at risk. To address the problem, Camfil was brought in to conduct a comprehensive Life Cycle Cost analysis, modeling how different air filters perform under the facility’s specific operating conditions. Based on the findings, Camfil-recommended filters were installed in three of the five air handling units (AHUs). Ongoing performance tracking demonstrated substantial savings by reducing energy consumption, labor requirements and disposal costs. Read the full story.

ROI and Operational Benefits

When evaluating air filters, it’s essential to look past the upfront price tag and consider all the expenses that accumulate over the filter’s entire lifespan. Factors such as energy usage, gradual loss of performance, labor for installation and replacement and disposal fees all contribute to the total cost of ownership (TCO). TCO is a comprehensive financial assessment that helps buyers understand both the direct and indirect costs tied to a product or system over time.

Filters with a low initial cost often clog more quickly, which drives up operational expenses as HVAC systems have to work harder and consume more energy to maintain airflow. By contrast, Camfil filters retain their efficiency much longer, capturing contaminants and preserving optimal airflow up to two or three times longer than conventional low-cost alternatives. This not only results in lower energy consumption but also reduces the frequency of filter changes, which means fewer replacement filters, less labor and less waste headed to landfills. All of these advantages further reduce overall TCOS.

To help facilities make informed decisions, Camfil offers the Life Cycle Cost (LCC) Software, an advanced modeling tool that calculates the TCO for various filter options under real-world conditions. The software analyzes factors such as filter price, energy usage, labor, carbon footprint and disposal costs. It also recommends the ideal pressure drop point for filter replacement to optimize energy savings and extend filter life as much as possible.

Don’t be swayed by bargain filters that appear cheaper upfront but end up costing you far more over time. When you’re ready to invest in new air filters, be sure to evaluate the complete picture and consider the true TCO to achieve the best long-term value and performance.

Conclusion 

Clean air solutions are critical for success in food processing. From protecting product integrity and preventing costly recalls to ensuring regulatory compliance and supporting a safe working environment, effective air filtration is the backbone of a resilient, efficient operation.

The connection between air quality, food safety and operational performance cannot be overstated. Facilities that prioritize clean air safeguard consumer health and also gain measurable advantages in productivity, energy savings, and brand reputation.

With decades of proven expertise in the food industry, Camfil delivers advanced air filtration solutions designed to meet the strictest standards and the most demanding applications. From high-efficiency filters to comprehensive lifecycle cost analysis, Camfil is committed to helping food manufacturers achieve cleaner air, safer products and lower total cost of ownership.

Contact Camfil to schedule an assessment of your food processing facility or connect with an air filtration specialist to discuss your specific needs.

 

¹ https://cleanair.camfil.us/2018/01/18/protecting-food-airborne-contaminants-can/

² https://www.ecfr.gov/current/title-21/chapter-I/subchapter-B/part-117

³ https://www.fda.gov/food/guidance-regulation-food-and-dietary-supplements/food-safety-modernization-act-fsma

⁴ https://www.ecfr.gov/current/title-9/chapter-III/subchapter-E/part-416

⁵ https://www.fda.gov/food/hazard-analysis-critical-control-point-haccp/haccp-principles-application-guidelines

⁶ https://www.camfil.com/damdocuments/29554/29384/brochure-food-and-beverage.pdf

⁷ https://cleanair.camfil.us/2018/01/18/protecting-food-airborne-contaminants-can/

⁸ https://www.camfil.com/damdocuments/29554/29384/brochure-food-and-beverage.pdf

⁹ https://www.camfil.com/damdocuments/29554/29384/brochure-food-and-beverage.pdf

¹⁰ https://cleanair.camfil.us/2016/10/27/how-to-account-for-total-cost-of-ownership/

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