Ever wonder which way the arrow should point on your furnace air filter?
Find out right here: Remember, any heating or cooling system that uses a fan to distribute air is not only blowing air out, but ALWAYS pulling air back TOWARDS it. Your filter slot is almost always on this "return air" side (the "suckie" side, not the "blowie" side). So point the arrow in the same direction that air is moving past your filter slot. If you can't tell which way the air moves just by looking, then do the ol' lick-your-finger-and-hold-it-in-the-breeze test (just don't let anyone pull your finger during this test).

If your filter location is different than the one in this video (which it likely is) just remember that you want the arrow to point (say it with me) TOWARD YOUR FURNACE...or perhaps I should say toward the ductwork the air travels through to get back to your furnace. EXAMPLE: if your filter is located in a ceiling, but your furnace is down in the basement...don't literally point the arrow downward "at your furnace" (because it would be pointing at you, and I'm fairly confident that you are not a furnace), point it UPWARD toward the path the air needs to take through the ducts in order to get back to your furnace.

It is SOOOOOO important that you REPLACE YOUR FILTER REGULARLY! DO I LIKE ALL CAPS!? ABSOLUTELY!!! :)

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