HVAC System Check
I have an older American Standard furnace and condensing unit that hasn't been keeping up with the demand over this hot summer. It's a basic unit, 11 SEER, no multi-zone, multi-speed kind of stuff.
I have some basic understanding of HVAC and refrigeration. I cleaned the condenser and all the mechanical parts seem to be functioning correctly. Filter is clean. I did measure the temperature of the air coming out of the condenser an it's only about 9-10 degrees above ambient. My gut reaction is that it is low on refrigerant but I'm not an expert.
If I bring in a pro, what should I expect him to check. Are there any other adjustments than can be made other than the refrigerant charge?