How often to change HVAC filter?

HVAC filters should be replaced when they are dirty. For cheap fiberglass filters, this might be more often than every 30 days, depending on your HVAC system, and whether you have pets, allergies, and more. HVAC air filters with better filtration may only need to be changed every 90 days. But again, how often to change a furnace filter should be based on the quality of the filter. You should at least check the filter every 30-90 days, depending on the type of filter. Then change it if it’s dirty. New to all of this? Learn how to change an air filter.

HVAC filter replacement?

HVAC filters should be replaced when they are dirty. For cheap fiberglass filters, this might be more often than every 30 days, depending on your HVAC system, and whether you have pets, allergies, and more. HVAC air filters with better filtration may only need to be changed every 90 days. But again, how often to change a furnace filter should be based on the quality of the filter. You should at least check the filter every 30-90 days, depending on the type of filter. Then change it if it’s dirty. New to all of this? Learn how to change an air filter.

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