HVAC Air Filter Buying Guide

An HVAC air filter being installed in a Simi Valley, CA, home.

Is it time to replace your HVAC system’s air filter? If your current air filter is dirty, clogged, or hasn’t been changed in at least three months, you’re most likely due for a replacement. However, if you’re a first-time homeowner or have never bought an air filter, you might not know what to look for. […]