Forum Discussion

wopachop's avatar
wopachop
Explorer
Jun 27, 2021

Better AC filter for those who havnt seen it yet

Done this the last couple summers with a household filter. Its the black label from Lowes. The different sizes are the same price, so get the 20x30 (or largest you see) if you decide to try it. I ...
2112's avatar
2112
Explorer II
Jun 29, 2021


I see a return plenum of about 2" in depth with a filter surface area of at least 3X the original filter. The additional pleated filter surface area should more than make up for the restrictive nature of the filter. Increasing the plenum depth would help. Only an anemometer would know for sure.

I personally would not do this but I do not see a big concern with it.

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