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central air conditioner not cooling
I've been reading deja articles for hours on separate days - but I
would like some quick advice if possible. I'll try to keep the story short. Moved into a condo; very old Lennox upflow heating/2-ton air conditioning unit. 900 sq ft open space (no bedrooms/doors) The air that comes out of the registers is _somewhat_ cold - but not cold as I like it to be. As a result, I can only maintain the indoors temperature at about 78, no lower. I would like to get down to 70 if possible (outside temp 80-95). It appears that the previous owner did not have an air filter where the air got sucked in by the fan... so I put in a new filter. Due to the way the unit is positioned (basically inside a closet) - I'm not sure if having a filter is causing a problem by possibly restricting intake of air. There is no icing on the pipes at the outside condenser unit as I can see. The alum fins on the condenser unit looks ok, free of debris. I had a guy come out and fill it with a pound of R22, he said it was low. I did notice some improvement, I can go down to about 76 now, but still I would like to go down further to 70. Am I asking the unit too much? What else can I check to narrow down the issue. From reading some posts, how do I check evap coils (this coil is different than the condenser right?) & condensor/coil water drain (not sure where this is located)? I realize that the AC guy is supposed to be doing this stuff for me, but to make a long story short I do not get to choose who comes by to diagnose the unit. In the event I do have to shell out money, I would like to be informed. Thanks for any suggestions. |
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