Gas Furnace Fan Occassionally Keeps Running After Burner Shutdown
You are obviously not a REAL contractor. Down here in the South if it's attached to the house, it needs to be replaced.
"well I can see that your unit is x years old and so is that old 12 gauge copper wire that connects it to the power panel. I suspact that you wpuld want to the do the right thing and upgrade to the correct 14 gauge wire (plus installation) right?"
You'll want a duct cleaning with that to keep your family safe too...