What Should Furnace Supply Air Temperature Be
Two floor house with an unfinished basement.
Have a Goodman-single stage - natural gas - forced air - 100K BTU furnace. Last year I foil taped all joints in basement trunk line and 6" branches. Also used some mastic.
Main trunk line in basement runs perpendiclar to joists then take offs run in between basement joist cavities then booted up thru subfloor to supply 1st floor vents.
2nd floor vents are supplied by duct runs from basement up thru 1st floor wall cavities. Pretty standard installation I believe?
I only mention this to indicate there are no duct runs in a crawlspace or cold attic.
Now for question:
At the supply register approximately what should the temperature of the supply air be?