I have a Coleman 2.5 T Air. Heating Unit. It is about 12 years old. I have had the air on for months now and everything has been great. Last Friday I noticed that the house was not as cool as it should be. Let me sum it up: It is blowing cool air (60 degrees), it is blowing air (though not as hard as it should be, in my opinion) But yet the house is 80 degrees not the 72 I have it set on. The repair man has been out 3 times. Cleaned everything including fan blades, coils. It put some freon in it the 1st time not much and then later cleaned evrything and said it probabbly did not need the freon that was put in it. Anyway, he says the compressor is working, fan is working and is stumped as to the problem. The only thing he has found is that maybe it is not pulling out the hot air out of the house. I told him it is not making the right sound. It normally comes on and then like catches a 2nd gear, you can hear something else click on. But sounds mean nothing to him if evrything is working properly. Can anyone give me any ideas. He is coming back out today. By the way it is catching up at night and cooling the house down to 72 and even shutting off some.
Outside daytime temp is 90 to 94. Not that hot. :confused:

If over charged with freon,, not a very good thing,, blowing 60 degree supply air is not terrible,, check temperature of air at the return,, is filter clean?, it could be that your fan is still in heat mode and not running as fast as it can in cooling mode,, you said you have had air on for months now,, wow we are just getting over winter where I live

It is not overcharged now and was only for a short time. He let some out. Yes 60 degree air is good, air at return, I assume you are talking about vent in house where air flow comes in at is 75 to 78 degrees. Yes, filter is clean as well as coils and fan and outside unit. Yes, it gets hot here in March. March is usually in high 60's April in high 70 to low 80 and May starts high 80 and low 90. By June it is anywhere from 90 - 100. We sometimes are still wearing shorts at Christmas.