Attic Filter for Ducted Mini
Installing a ducted mini split in my small barndo apartment. Our Man J recommends two air returns (master Bed and Livingroom).
I am looking for ideas for an at unit air filter. Do I use a standard 20×20 5″ filter housing, but then neck it back down to the 30×7 return side of our handler?
If no at unit filter option, do I just use standard 2″ filter returns at both returns and swap the filters at the same time? Aprilaire 2025FG13 or so.
Lastly, is there such as thing as too much return?
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