Furnace/Air Conditioning Unit Not Blowing Cold Air


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Old 06-30-12, 01:00 PM
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Furnace/Air Conditioning Unit Not Blowing Cold Air

Hello everyone.

In the video link that I will post, I explain that I am having a problem with my central AC system. What it seems to be doing is if I turn it on and the temp is in the 90's outside and it's humid, the AC unit will make a squealing sound and then it turns into a hissing noise. Once it turns into a hissing noise, the air coming out of the vents doesn't blow all that cold like it should which therefore keeps the indoor temperature where it's at or raises it up depending on how hot it is. The furnace is a wall mounted closet unit and the AC system is in the same place as well. What do you think is causing this? Usually it will start making the hissing noise about 1-2 minutes when the system is turned on and the hissing noise 2-3 minutes later. If I turn on the AC unit when the temperature is in the 70's, the AC unit runs just fine and keeps us cool even if the temp goes up high later in the day.

What's wrong with my AC unit? - YouTube

I've had the apartment complex maintenance guys out three times now to try and fix this problem and so far, they did some sort of valve repair I think and recharged the compressor with freon. Usually when they leave, it runs fine for a bit and then starts acting up. What is causing this?
 
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Old 07-02-12, 01:33 PM
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Update everyone:

I was able to turn it on Saturday night when it was somewhat cooler than it was earlier in the day and it ran with no problem. I've had it on since then with no problems up until now. Then the compressor or something started making squealing sounds and it then turned into the hissing sound and is blowing not so cold air out of my vents. What could be causing this anyone?
 
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Old 07-02-12, 06:32 PM
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failing capacitor or fan motor...........
 
 

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