Puget Sound's No. 1 Source for Heating Fuels, Equipment, Service, Repair and Research
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How often should I replace my furnace air filter?
Each home will be different. If you have an active household with kids or pets you should probably replace them more often than a less active home. We recommend replacing or cleaning your filter system every 60 days during the heating season. If you have your furnace fan operating all the time you woule want to replace or clean your filter every other month all year long.