Wednesday, January 15, 2025

Best Air Filters for Universities and Colleges – How This Swedish Air Filtration Company is Helping American Colleges Boost Air Quality and Safety

The air you breathe impacts everything from your health to your ability to focus. For universities and colleges—where thousands of students, faculty, and staff spend most of their time and even live—air quality is more than just a comfort issue; it’s a key component of health, productivity, and safety.

Recent concerns about airborne pathogens and environmental pollutants have put a spotlight on the importance of air filtration. Poor air quality can exacerbate allergies, spread illnesses, and lower cognitive function, all of which can negatively affect academic performance and student satisfaction. Ensuring clean air in student housing, lecture halls, libraries, and gyms has become an essential safeguard for campus health and safety.

This guide explores the unique air filtration needs of academic environments, what to consider when choosing air filters, and the best products to ensure optimal air quality in universities and colleges.

Identifying University and College Air Quality Needs

The first step in choosing effective air filtration products is to identify air quality needs. Every university or college campus is unique, with varying building designs, spaces, and uses that create diverse air quality requirements.

High Traffic Areas

Thousands of students moving in and out of classrooms, cafeterias, and dormitories means that particulate matter (including dust, pathogens, and mold spores) is constantly being introduced into the air stream. This pollution is then moved around the space by both foot traffic and the HVAC system itself. Without adequate air filtration, these can circulate freely, impacting the health of everyone on campus.

Variety of Building Uses

Universities and colleges often contain a mix of residential buildings, laboratories, lecture halls, and shared recreational spaces. Laboratories may require highly specialized filtration systems for keeping chemical contaminants contained and protecting equipment, while solutions for removing mold and allergens from the air are a top priority for housing and libraries.

Large HVAC Systems

Many large academic buildings use centralized HVAC systems to manage airflow. These large systems require filters capable of handling substantial air volume while maintaining energy efficiency and performance.

Health and Safety Standards

Strict compliance with health, safety, and energy regulations adds another layer of consideration. Universities must balance effectiveness, cost, and regulatory compliance in their air filtration choices.

Geographical Considerations

Additional factors such as the rurality of the campus’ location, proximity to large roads or industrial facilities, and even how many students have brought their cars to school with them all impact an institution’s specific air filtration needs.

Key Factors in Choosing the Best Air Filters

To address the diverse air quality needs of colleges, facilities management and building coordinators need to evaluate several critical factors when selecting air filters:

1. Efficiency Ratings Matter 

Air filters are rated on their ability to trap small particles, using the MERV (Minimum Efficiency Reporting Value) system. Ideally, universities should look for a MERV rating higher than 13, and use filters labeled with a MERV-A rating,  such as MERV 13/13A. Filters with their MERV A value published indicates they will maintain that efficiency value for their entire service life.

Universities should aim for filters with a MERV-A rating between 13 and 16, as these can capture airborne particles like viruses, allergens, and bacteria without overly taxing HVAC systems.

2. Durability and Lifecycle

Frequent filter replacements can drive up costs and maintenance workload. Long-lasting filters are a smart investment, particularly for facilities with extensive HVAC systems. Ask the supplier to provide service life guarantees. 

3. Energy Consumption 

High-performance filters can sometimes increase energy consumption by restricting airflow. Look for options designed for energy efficiency without compromising filtration quality to reduce your campus’s carbon footprint and electricity bills. Ask the supplier to provide an energy cost analysis for the recommended filtration solution. 

4. Application-Specific Needs 

Filter selection should be tailored to the type of building or space and conform to local or school efficiency requirements. For example:

  • Lecture Halls and Recreational Spaces:  High-traffic spaces benefit most from air filters that target particulate matter with a minimum efficiency of MERV 13.
  • Classrooms and Offices:  Small, enclosed spaces should prioritize filters that help reduce the spread of communicable diseases with a minimum efficiency of MERV 14A.
  • Student Housing:  Filters that reduce allergens and mold are crucial for dormitories and housing. If the HVAC system is configured to hold air filters at least 6 inches in depth, consider a minimum of MERV 14A.
  • Laboratories:  Require filters capable of handling volatile or chemical contaminants, and/or filters that keep the air as pure as possible to avoid harming sensitive equipment or interfering with research results. High-efficiency filters with both particulate and molecular capabilities are a good option. HEPA filters may be required in some laboratories and research spaces.

5. Cost and Budget Considerations 

Universities operate on tight budgets, so the overall expenses—initial costs, maintenance, and operational energy costs—must be considered. Request that the filter supplier provide a campus-wide total cost of ownership report. 

Practical Tips for Maintaining Air Quality on Campus

Investing in the right air filters is essential, but ongoing maintenance and best practices are equally critical to ensuring long-term air quality. Here are key strategies:

  • Regular Maintenance:  Create a robust filter replacement schedule to maintain optimal performance.
  • Monitor Air Quality:  Use air quality monitors to track particulates and pollutants in real-time. 
  • Optimize HVAC Systems:  Regularly inspect and clean your HVAC systems to maximize filtration efficiency. 
  • Communicate with Stakeholders:  Work alongside student affairs professionals to educate staff and students about the importance of maintaining good air quality.

Recommended Air Filtration Products from Camfil

Camfil is a trusted industry leader in air filtration solutions, offering products that meet the diverse needs of universities and colleges. Here are some top picks for campus use:

  • Camfil Clean Air Solutions Premium Air Filters.  High-performance, energy-efficient filters designed for large-scale HVAC systems. Available with MERV ratings up to 16 for comprehensive protection.
  • Durafil ES3 Filters.  Ideal for dormitories and office buildings, these advanced filters offer high dust-holding capacity to reduce maintenance frequency.
  • CC500 Air Purifier.  A portable option for smaller rooms—great for faculty offices, meeting spaces, laboratories, or locker rooms—designed for ultra-clean air quality.
  • Camfil Molecular Filtration Solutions. These products are specialized for removing chemical contaminants and odors, making them excellent for laboratories and kitchens.

Facilities managers and building coordinators can rely on Camfil to meet stringent air quality standards while keeping functionality and budget in mind.

About Camfil Clean Air Solutions

For more than half a century, Camfil has been helping people breathe cleaner air. As a leading manufacturer of premium clean air solutions, we provide 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. We firmly believe that the best solutions for our customers are the best solutions for our planet, too. That’s why every step of the way – from design to delivery and across the product life cycle – we consider the impact of what we do on people and on the world around us. Through a fresh approach to problem-solving, innovative design, precise process control, and a strong customer focus we aim to conserve more, use less and find better ways – so we can all breathe easier.

The Camfil Group is headquartered in Stockholm, Sweden, and has 30​ manufacturing sites, six R&D centers, local sales offices in 35+ countries, and about 5,600 employees and growing. We proudly serve and support customers in a wide variety of industries and in 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/ 

 

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Camfil USA Air Filters 

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Wednesday, January 1, 2025

Advancing Cleanroom Air Quality with Sustainable HVAC Filtration

Cleanrooms are critical environments designed to maintain low levels of particulates, microorganisms and other contaminants. They serve essential roles across industries such as pharmaceuticals, biotechnology, electronics manufacturing and healthcare. Whether you’re producing life-saving medications or microchips, even microscopic particles can cause catastrophic failures. 

Therefore, to achieve the required air purity standards, HVAC systems in cleanrooms must incorporate advanced air filtration solutions. Additionally, as sustainability becomes a central focus globally, the cleanroom industry is exploring innovative ways to balance high-performance filtration with environmental responsibility.

The Importance of HVAC Filtration in Cleanrooms

Cleanrooms operate under strict environmental controls to ensure product quality, regulatory compliance and personnel safety. Key components affecting air quality in a cleanroom include airflow management for contaminant control, pressure differentials to prevent contamination between the cleanroom and surrounding areas, and the air-change rate (ACR). 

Management of airflow uniformity is vital in cleaning pockets of air where particulates may have accumulated in greater amounts. Airflow uniformity refers to the consistent flow of filtered air in one direction, typically in a vertical flow. The ACR is the number of times in a 60-minute period that filtered air is recirculated within the cleanroom. Cleanroom ACR is dependent on factors such as size and usage, so it can range from 10 to 600 times in a 60-minute period.

Of course, air filters play a significant role in maintaining contaminant-free cleanrooms. High-efficiency particulate air (HEPA) filters can capture a minimum of 99.97% of particles as small as 0.3 microns, making them ideal for cleanroom air management. Ultra-low penetration air (ULPA) filters remove 99.999% of particles down to 0.12 microns, offering an additional layer of protection for the most critical environments. Air filtration experts often recommend a multi-stage filtration system that includes minimum efficiency reporting value with Appendix J (MERV A) 13A filters and HEPA filters to ensure a high level of contamination control.

International Cleanroom Standard

ISO 14644-1 is an international standard that classifies the cleanliness of air in cleanrooms and controlled environments based on the concentration of airborne particles. This standard defines the classification of cleanrooms by particle concentration, using units of particles per cubic meter. Classifications range from ISO Class 1 (the cleanest) to ISO Class 9 (the least clean). For example, natural air in a typical urban environment contains about 35 million particles that are .5 microns or larger in size, per cubic meter. Air of this quality would be allowed in an ISO class 9 environment. In an ISO class 1 environment, there must be 0 particles of .5 microns or larger and only 12 particles of .3 microns and smaller, per cubic meter.

This standard was first published in 1999 and revised in 2015. In 2001, the international ISO 14644-1 standard officially superseded the Federal Standard 209E, which was widely used in the U.S. 

ASHRAE Cleanroom Design Guidance 

The American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) publishes a design guide for cleanrooms. While absolute non-contamination is unattainable, cleanrooms can be engineered, managed and maintained to meet precise indoor air cleanliness standards tailored to specific process needs. 

The ASHRAE Design Guide for Cleanrooms provides an in-depth resource on cleanroom concepts, fundamentals, performance control strategies, testing methods and industrial applications. Designed for accessibility, it serves as a technical reference for cleanroom designers, builders, owners and operators.

Solutions for Sustainable Air Filtration

Balancing sustainability with cleanroom requirements poses unique challenges because, despite the importance of high-performance air filtration, it comes at a cost—energy consumption. Over time, as air filters collect particles, their resistance increases, placing additional strain on the HVAC system. 

Innovations in filter technology help to tackle these challenges. These advanced filters feature longer lifespans and are designed to reduce pressure drop, enabling efficient airflow and lowering energy costs while ensuring clean air quality.

In addition, cleanrooms rely on multi-stage HVAC systems to meet stringent air quality requirements. These systems use a tiered filtration approach, with pre-filters serving as the first line of defense. Pre-filters capture larger particulates before air reaches the more efficient secondary and final filters, such as HEPA and ULPA filters.

By intercepting large contaminants early, pre-filters reduce the workload on downstream filters, which are designed to capture ultra-fine particles. Protecting these high-efficiency filters from excessive exposure to larger particulates is critical, as clogging or damage can compromise their performance, shorten their lifespan, and lead to more frequent replacements—resulting in higher operational costs and increased downtime.

Pre-filtration is essential for extending the life of high-quality filters, minimizing maintenance expenses, and ensuring the smooth operation of HVAC systems. By safeguarding downstream filters, pre-filters also help maintain consistent airflow, enhance overall system performance, and reduce energy consumption.

Camfil’s Commitment to Cleanroom Excellence
Camfil’s cleanroom filtration solutions are designed to combine cutting-edge technology, durability and energy efficiency. In particular, Camfil’s Megalam ES and Absolute VG air filters stand out for their ability to ensure air quality that meets or exceeds industry requirements while optimizing operational costs.

Camfil’s Megalam ES HEPA panel filters offer a long lifespan while maintaining airflow and efficiency. These filters are engineered to reduce airflow resistance and pressure drop, which lowers energy consumption and enables facilities to maintain clean air without excessive operational costs. They are made with durable ePTFE media, are resistant to damage during shipping and installation, reducing the risk of compromised filters and avoiding costly downtime.

Camfil’s Absolute VG V-bank style HEPA filters feature advanced media designed to achieve high-efficiency particulate capture while minimizing airflow resistance. This design reduces the strain on HVAC systems, enabling facilities to meet stringent air quality standards for regulatory compliance while keeping energy consumption and costs under control.

With an extended service life, Absolute VG air filters further enhance energy efficiency by decreasing the need for frequent replacements. This not only reduces operational costs but also minimizes interruptions to production. Their ability to maintain superior filtration performance over time makes them an ideal choice for cleanroom environments where reliable HEPA filtration is essential.

The Future of Cleanroom Air Filtration

As industries grow increasingly reliant on cleanroom environments, the demand for reliable energy-efficient and reliable air filtration solutions will escalate. Camfil is leading the charge by continually refining its products to address emerging challenges. With a focus on sustainability, Camfil ensures that future offerings will not only enhance air quality but also align with environmental and energy-saving goals.

For more information about Camfil’s high-efficiency air filtration solutions, visit https://www.camfil.com/en-us/

 

¹ Providing a more effective cleanroom air filtration strategy, https://cleanair.camfil.us/2016/11/11/air-filtration-update-from-camfil-usa-federal-guidelines-for-cleanrooms-may-help-provide-a-more-effective-air-filtration-strategy/

² ISO 14644-1:2015, Cleanrooms and associated controlled environments, https://www.iso.org/obp/ui/#iso:std:iso:14644:-1:ed-2:v1:en

³ A Look Inside Life Science Cleanrooms,   https://cleanair.camfil.us/2016/09/12/a-look-inside-life-science-cleanrooms-by-air-filtration-leader-camfil-usa/

⁴ ASHRAE Design Guide for Cleanrooms,  https://www.ashrae.org/technical-resources/bookstore/ashrae-design-guide-for-cleanrooms

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