Quote:
Originally Posted by HondoSwatdog
So... is that normal for hot air to be coming out of the stairs with the A/C on?
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If you have air coming in through the stairs with the AC on, you have a return air flow restriction in the air return vents in the ceiling.
Open them, clean the filters, inspect them to be sure they are properly sealed from the attic.
Most likely you have collapsed return ducts.
IF you have collapsed ducts, many have successfully installed PVC pipe in the return to open it up.
In this video I would have installed longer pieces of pipe.
Montana HC return duct mod