AC Filter Air Flow


Old 07-05-18, 11:08 AM
Thread Starter
Join Date: Oct 2017
Location: USA
Posts: 11
Smile AC Filter Air Flow

Hello all,

Our AC Unit is in the garage, and the builder told me that there is a single filter for the entire house that needs to be changed here.

I am trying to figure out which way the air flow goes (which way the arrow should point when I put in the filter).

Here is a photo I took and marked up.

Name:  filter.jpg
Views: 44
Size:  81.7 KB

Thank you very much in advance!


Last edited by PJmax; 07-05-18 at 02:02 PM. Reason: added pic from link
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Old 07-05-18, 01:16 PM
Join Date: Nov 2011
Location: USA
Posts: 660
It goes up, see the insulation on the duct for one thing. Could of held a small rag or string where the filter goes for a short time.
Old 07-05-18, 01:40 PM
Thread Starter
Join Date: Oct 2017
Location: USA
Posts: 11
Thank you for the response. I appreciate it! Good idea with the string, will try that next time. :-)
Old 07-06-18, 03:46 AM
Join Date: Feb 2014
Location: USA
Posts: 2,079
The arrow should point up.

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