AprilAire Issues Guidelines for Indoor Air Safety During Wildfire Season

Many homeowners mistakenly believe that if they cannot smell or see smoke, their indoor air remains safe. However, Dr. Jatin Khanpara, Chief Technology Advisor at AprilAire, warns that the most dangerous wildfire byproducts are submicron particles too small for human detection. These microscopic pollutants, known as PM2.5, bypass natural respiratory defenses and can penetrate deep into the lungs or even the bloodstream, posing significant risks to children, the elderly, and those with pre-existing health conditions.

Outdoor pollutants infiltrate homes through gaps in the building envelope, exhaust vents, and HVAC fresh-air intakes. To combat this, experts suggest moving beyond passive observation. Homeowners are encouraged to install high-efficiency filtration systems—specifically those rated MERV 13 or higher—to capture fine particulate matter. Proactive measures, such as consulting with HVAC professionals to optimize filtration before smoke arrives and utilizing indoor air monitors, are essential for maintaining a safe breathing environment when outdoor conditions deteriorate.