Air Conditioning - Air filter question

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kimstm
01-20-08, 01:30 PM
Hi. My return air vents are in the ceiling. I bought new air filters. On them it reads "air flow" with an arrow pointing upwards. Which way does the air flow? I assumed I should put them in with the arrow pointing up to the ceiling. Then I started thinking maybe the air flows from the vent down into the house and the arrow should be pointing down to the floor.

Thanks for your help.

Kim

airman.1994
01-20-08, 02:41 PM
Arrow should face into the duct! Air is being pulled from the living space to your HVAC equipment!
kimstm
01-20-08, 02:47 PM
Thanks for your help!!

Ed Imeduc
01-21-08, 06:33 PM
It pays to put a new filter in every30 to 90 days. In heat or cool. The pleated kind is best and not over a MERV 5. We find that over a Merv 5 is hard on the blower motor.