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Old 05-23-2012, 09:21 AM   #1
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Tempstar Central Air Outdoor Unit LOUD


Hi Gentleman,

I understand that most central air units are a bit loud by nature but mine has become increasingly louder over the last year. The unit is about 10 years old and by my crude calculations it is a bit undersized and runs for hours at a time in the summer months. My intention is to get it serviced but I was just wondering if there was any obvious things that could be causing the problem. When I moved in 5 years ago the unit was fairly quiet. It is a constant loud hum that only comes from the outdoor unit.

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Old 05-23-2012, 11:56 AM   #2
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Tempstar Central Air Outdoor Unit LOUD


Dirt in the fins will make the compressir louder. Might be fine after a good service.

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Old 05-23-2012, 01:00 PM   #3
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Tempstar Central Air Outdoor Unit LOUD


remove the compressor wires tape away and push the contactor in might be a simple condenser fan bearings going free spin both direction hear any grinding..rumbling??....snow sitting on the top of the condenser in the winter.freon is tight have you had it added with a slow leak over the years? oil leaks out in droplets when the freon is exiting compressor might be on it's way out if the condenser fan is quiet?
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Old 05-23-2012, 02:24 PM   #4
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Tempstar Central Air Outdoor Unit LOUD


Quote:
Originally Posted by biggles View Post
remove the compressor wires tape away and push the contactor in might be a simple condenser fan bearings going free spin both direction hear any grinding..rumbling??....snow sitting on the top of the condenser in the winter.freon is tight have you had it added with a slow leak over the years? oil leaks out in droplets when the freon is exiting compressor might be on it's way out if the condenser fan is quiet?
Apologies, I'm trying to understand. I haven't noticed any oil like substance anywhere. I will try and free spin the fan to see if I notice anything. I will also clean the fins with a pressure washer although they don't appear dirty. What would pushing the contactor in do?
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Old 05-24-2012, 12:16 AM   #5
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Tempstar Central Air Outdoor Unit LOUD


Never, Never use pressure washer to wash the fins. The fins are soft.
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