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Old 02-11-2019, 06:58 AM   #3
LTb1ow
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Quote:
Originally Posted by MDSheds_SS View Post
Most likely that register is for return air. Not a good idea to close it. The burner gets intake air from the PVC/outside. The actual air that gets heated and cooled is separate and has nothing to do with the PVC intake or exhaust. The more return air the better.
Negative, this is literally a duct straight outside. Nice and drafty.

Furnace return for the closed system is different.
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Quote:
Originally Posted by KirkEvil View Post
repo bigals turd gen and part it out to a loving home
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