Four Emerging Trends in Indoor Air Quality

Indoor air quality (IAQ) plays a pivotal role in creating a healthy and productive school environment. With approximately one in five people in the U.S. spending their days in school buildings, understanding and improving IAQ is essential for student health, learning, attendance, and overall ...

In an age where indoor air quality (IAQ) is paramount, HVAC professionals operating and designing commercial buildings are the unsung heroes in the battle for clean air. However, navigating the nuances of what constitutes 'clean air' is far from straightforward and packed with misconceptions that ...

ASHRAE Standard 241, "Control of Infectious Aerosols," gives engineers the first standards-based framework for evaluating whether a building's air handling actually reduces infection risk. Where ASHRAE 62.1 targets occupant comfort thresholds and air quality that impacts health, Standard 241 ...

Since 2008, GPS has been an industry leader in indoor air quality (IAQ). Building on its commitment to science and its dedication to continuous technological advancements, GPS hired Edward Sobek, PhD, as its first chief science officer (CSO). In this unique position, Dr. Sobek plays a pivotal role ...

Updated May 2026 Most building operators assume a MERV 13 filter is doing its job. It is — for large particles. But for particles smaller than 1 micron, including most individual viruses and the fine particulate matter in wildfire smoke, even the highest-rated MERV filters have a structural blind ...

Updated May 2026 Most people spend over 90% of their time indoors. That air carries the same mix of contaminants found outside, often at higher concentrations, with no wind or weather to disperse it. Particulate matter, or PM, is the most studied and most consequential category of indoor air ...

Third-party testing shows that when ionization is added to HVAC systems, filter performance improves, particularly with respect to removing microscopic and submicroscopic particles, including many viruses and bacteria.[1]

Particulate matter (PM) is a major contributor to air pollution worldwide, and the relationship between PM and adverse short- and long-term health effects is well documented.

Wildfires — uncontrolled and unpredictable fires — are increasing in prevalence in the U.S. and around the world, posing significant environmental and public health threats. The impact of wildfire smoke is a big problem that is only getting bigger. From 2000 to 2021, wildfires burned nearly 7 ...