Okay, I'm having some issues with my A/C keeping up with the heat. It got pretty hot in here on a 100 day (82ish), but I know that is probably to be expected. The issue is that the A/C is just running and running and takes a very long time to cool. My home is ~2700 sqft and the thermostat is at the bottom of a 2 story great room. Not sure how to know how many tons my A/C unit is, but it says it had 6.63lb of R-22 charged at the factory. From the model it looks like it is 48k btu's. The unit is was installed in either 1996 or 2001 I believe.
I had a tech out today and he checked the refrigerant and everything looked fine he said. I had manually checked the drop across the coil by measuring before the air filter and at the top of the plenum where the a-coil is housed (I have a gas forced air furnace with a-coil in the basement). The drop was between 11 and 13 degrees depending on when I checked it. 13 was after I used coil cleaner on the outside condenser unit. the a-coil was clean as well.
So the tech basically said it was doing all it could and nothing was wrong with it. Would you expect more than a 13 degree drop? Also I went out to the condenser outside and while it was running the air coming out of the top almost seemed cool. I'm used to that air being very hot as it pulls the heat out of the refrigerant and over the coils. Not sure if that has anything to do with it, but just an observation.
Other than an energy audit is there anything I could/should do at this point?