Hello, Magic-Pak HVAC unit is in shed outside a condo. There is a blue washable filter in the actual unit under a panel over fins. There is also a cardboard filter in the air intake vent inside the condo. Are these redundant? If so, which would be best to remove? Please answer me. Thanks.
rosetaylor
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22,683 Posts
I wouldn't take out the filter at the unit unless you're sure the return air duct is very tight.
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22,683 Posts
Best to put cheap filter at the intake and have a good filter at the unit, if it can be done without increasing static much.
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