When it comes to home air purifiers, HEPA filters are considered the best at removing at least 99.97 percent of airborne contaminants 0.3 microns in size, which is equivalent to MERV 16.

Furnace filters designed to act as whole-house air filters add stress to the blower in an HVAC system by impeding airflow. Two design adjustments at installation can resolve this issue and potentially ...

MERV filters are rated on a scale from 1 to 16, with MERV 13 and higher being recommended for wildfire smoke. While MERV filters effectively trap fine particles, they may not capture the smallest ...

The most commonly used system applies a MERV number (minimum efficiency reporting value) to each filter, which was developed by ASHRAE (formerly the American Society of Heating, Refrigerating and ...