Replace old HVAC filters with fresh ones to ensure optimal airflow, protect your system from dust buildup, and maintain high indoor air quality.
Air Filter
Change Air Filter
Pro Tips
Standard homes should replace filters every 1-3 months, more often with pets or allergies.
A clogged filter restricts airflow and can shorten HVAC lifespan.
Higher MERV ratings catch more particles but may reduce airflow if your system isn't designed for it — check manufacturer recommendations.
Steps
1Turn off the HVAC system at the thermostat
2Locate the air filter (return vent, furnace, or air handler)
3Remove the old filter and note airflow direction arrows
4Check the filter size printed on the frame
5Vacuum dust from the filter slot or vent area
6Write the install date on the filter frame (optional)
7Insert the new filter with arrows pointing toward airflow
8Secure the cover or panel
9Turn the system back on