Health & Safety

A Breath of Fresh Air: How Air Purification Creates Safe Learning Environments

by Ashley Wallinger

August 12, 2021

The return to in-person learning marks a significant milestone in the battle against the COVID-19 pandemic. With the new school year looming, millions of students and teachers are headed back to the classroom for the first time since March 2020. Schools have been planning for this return for months. In the face of new COVID-19 variants, it’s crucial for administrators to consider how to keep students and staff safe.

The CDC offers guidelines for schools to improve building ventilation to prevent the spread of viruses. The recommendations include improving central air filtration by ensuring filters are appropriately sized and within their recommended service life ( 1 ) and supplementing existing ventilation systems with portable air cleaners.

Using portable air filtration systems in combination with universal masking can reduce exposure to COVID-19 aerosols by up to 90%. ( 2 ) Air filters offer a much more affordable option versus the cost of overhauling a school’s HVAC system.

Contaminated Air Can Lead to Learning Issues

Even before the pandemic, poor air quality has been shown to negatively affect learning, with lowered test scores and increased behavioral incidents and absences in students exposed to pollutants. ( 3 )

In response to concerns about air quality, the American Rescue Plan provides two years of emergency funding for schools to improve indoor air and address other environmental health hazards. In a recent report, the Johns Hopkins Center for Health Security at the Bloomberg School of Public Health urged schools to invest in solutions to prevent the spread of COVID-19 and other respiratory diseases and improve student learning. ( 4 )

Their recommendations include:

  • Purchase HEPA air filtration units for classrooms and common areas.
  • Use only proven technologies: appropriate ventilation, HEPA filtration and ultraviolet germicidal irradiation.

When it comes to air filters, size matters – particle size, that is. Minimum Efficiency Reporting Values (MERVs) dictate efficiency. ( 5 ) A higher number indicates the filter can capture smaller particles of bacteria, dust, mold, pollen and viruses.

High-Efficiency Particulate Air (HEPA) filters are widely considered the gold standard in filtration, particularly with the coronavirus, which travels in smaller-sized particles than many other airborne contaminants. HEPA filters must be at least 99.97 percent efficient at capturing particles 0.3 µm in size and have even higher efficiency for smaller and larger particles.

Some school ventilation systems aren’t equipped to handle HEPA filters, but portable filtration options are available and recommended by ASHRAE. ( 6 ) New York City School District, Chicago Public Schools and hundreds of other districts across North America are investing in portable air purifiers before reopening this fall. ( 7 )

An Affordable Solution

One of the most popular solutions that meets ASHRAE standards and performs well in classroom settings is the Surgically Clean Air JADE Purification System. It uses a HEPA-Rx filter, activated carbon filter and germicidal UV-C+ to capture and destroy viruses, bacteria and other harmful particles in the air. This combination of technologies makes the JADE more effective at removing pollutants than a HEPA filter alone.

The JADE utilizes trusted technology to remove 99.998% of indoor air contaminants. Its multiple stages of purification – capturing, absorbing and destroying pollutants and re-energizing the air – helps protect students and staff.

While popular in dental and medical offices, the JADE is gaining traction in K-12 schools and college campuses. David MacAleese, Executive Vice President of Business Development for Surgically Clean Air, says it comes down to one thing – the JADE is whisper quiet. “Other purification systems are so loud that teachers can’t talk over them without turning the speed down, which means there are fewer air changes,” he says. The JADE’s design allows for a more efficient airflow while keeping the sound volume as quiet as a standard household dishwasher. This means learning won’t be interrupted, and students and teachers can breathe easier.

Create Safe Learning Environments with Solutions for Cleaner Air

The American Rescue Plan was created in part to support the safe reopening of most schools. While keeping schools closed removes a source of COVID-19 risk for students, teachers and staff, virtual learning isn’t the best option for all students. ( 8 ) There are many community-wide benefits to in-person learning, such as:

  • Psychological well-being through reduced isolation
  • Social skill-building opportunities
  • Access to nutritional and welfare services
  • Improved learning quality for students with special needs
  • Allows parents to return to work and avoid child care costs

Investing in portable air filtration systems is one way for schools to reopen safely, improve indoor air quality and ensure students can learn to their full potential.

Learn more about how the JADE Purification System helps create safer, healthier learning environments this school year and beyond.


  1. ASHRAE. ASHRAE Filtration Technical Resources [Technical Resource]
  2. Lindsley, W. PhD, Derk, R. MS, Coyle, J. PhD, Martin, Jr, S. PhD, Mead, K. PhD, Blachere F. MS, Beezhold D. PhD, Brooks J. MD, Boots T. MS, Noti J. PhD. 9 July 2021. Efficacy of Portable Air Cleaners and Masking for Reducing Indoor Exposure to Simulated Exhaled SARS-CoV-2 Aerosols — United States, 2021 [Report]
  3. Gilraine, M. 28 October 2020. The importance of clean air in classrooms—during the pandemic and beyond [Report]
  4. Olsiewski, P., Bruns, R., Gronvall, G., Bahnfleth, W., Mattson, G., Potter, C., Vahey R. 26 May 2021. School Ventilation: A Vital Tool to Reduce COVID-19 Spread [Report]
  5. United States Environmental Protection Agency. 3 March 2021. What is a HEPA filter? [Report]
  6. Tobias, M. 24 June 2021. Coronavirus Prevention with Air Filters: Understanding MERV and HEPA [Blog]
  7. Salhotra, P., Zimmer, A. 9 July 2021. All classrooms to have 2 air purifiers next year, New York City officials pledge [News Article]
  8. Editorial Board. 27 July 2021. Opinion: The benefits of in-person learning still outweigh the risks [Opinion Article]

About the Author

Ashley Wallinger is a content marketing specialist at Trox. She began her career in broadcast journalism, working as a producer at two TV stations, where she created content for news broadcasts and digital platforms. She has since held roles as a digital copywriter for a marketing agency, as well as a social media specialist overseeing content creation and analytics for the Scottsdale Unified School District in Scottsdale, Arizona. Her background and profile can be found on LinkedIn.