Central Ac Uni Blowing Warm Air
At first my copper line was freezing, so I called someone out to fix it. The service man said it was low on Freon and charged it. It worked fine for a month and then it froze again.
He came back and said it has a slow leak. So he bought out a can. The can is hvacr super stop leak or something like that. He recharged the can into the system. Now my AC will work fine for a little while then all of a sudden it doesn't blow cold air.
This happened the first time so I shut it off for about 8 hours. Turned it on for a couple hours then it started to have cold air again. The cold air lasted about 1 week and now it is blowing warm air again. Sorry I am not home, to see what the model is.
I believe the unit is around 10 years old. The service man stated that the unit looked brand new and he thought the previous owners never used it. I did notice that when it is blowing warm air, the big copper line is warm and the unit outside is blowing cool air not hot. Other than that I did not notice anything different. The outside unit is clean, the coil is clean and it has a new filter in it. Thanks for your time and help