AC doesn't cool enough


  #1  
Old 08-02-12, 07:34 PM
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AC doesn't cool enough

I have a rental home. tenant complains that for last a few days, AC runs most of the day but doesn't cool below 80 degrees (here in Texas, high goes around 106/107 these days). he said at night after serveral hours, it finally can cool down below 80 degrees.
I had him do basic testing. for example, if he shuts down thermstat, outside unit stopped running. that means contactor is not stuck. also i changed capacitor a couple of months ago.

there is no wet spots in or around furnace. I had him check on the sucktion line outside. he said it's not cool at all. not sweat either/

one thing is that the filter was dirty. I had him replace the filter and monitor tonight.

can dirty filter cause AC this behavior (not cool enough and suction line not cool)?

Other than that, what else can I do before calling for an AC tech?
 
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Old 08-02-12, 08:03 PM
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can dirty filter cause AC this behavior (not cool enough and suction line not cool)?

Nope

Other than that, what else can I do before calling for an AC tech?

If it cooled well before, system most likely has a refrigerant leak.

Don't let a tech just top the system off; if there's a leak, it should be fixed.


Read more: http://www.doityourself.com/forum/ai...#ixzz22RrcQZK3
 
  #3  
Old 08-03-12, 03:04 AM
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If it is an old home, the air ducts are probably made of abesteos (harmful to breathe in). Over time and like mine, they collapse in the attic and does not deliver the air to the vents. You should have it check out and replace if necessary.

This is good for both cold air (summer time) and hot air (winter time).

Plus if the air ducts are collapsing, it is bad for the entire AC unit because it will force it to constantly running.
 
 

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