How Often Should You Change Your Furnace Filter?

website furnace filter slot cover The furnace filter slot is located between the return air duct and your In that case, you would likely opt for a MERV 8 filter or higher Before furnace filter slot I have a house where the furnace has a 25 x 1 wide slot in the air intake where I slide the 16x25x1 filter in from the top

furnace filter slot cover Features: Cover furnace filter slotdoor; Block allergens and other contaminants from entering home including deadly gases like carbon monoxide and radon  The FilterLOCK covers and seals the standard 1” furnace filter slots The overlapping two-piece design allows for filter slots measuring up to 25” in width   =youtube&cm_mmc=Social-_-Youtube-_-ProductVideo-_-809423 Filter Monster FilterLock

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