At the pre-sale home inspection, the inspector noted that the temperature in the plenum was running high. I don't have the exact figure, but the registers in the room directly above the furnace get REALLY hot to the touch, way too hot to me. My impression is that the blower isn't really blowing all that well, either.
Questions:
1) could there be dirt and crap further up in the system (A-coil??) causing air flow restriction and the high temps at the plenum and near registers? How to check? How to clean?2) Calling in the HVAC guy is on the to-do list, but they're really booked up right now. What minor stuff can we do (cleaning, examining) until the HVAC guy comes to do the winter inspection/tune-up??
3) Is it dangerous to have such high plenum temp? Furnace is not short cycling, or acting wacky in any other ways..