High Pitched Whine in Return

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  #1  
Old 06-03-06, 03:43 AM
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Question High Pitched Whine in Return

Hi all,
We have a high-pitched whine in our return in the master bedroom. Needless to say, this is quite annoying when you are trying to sleep! The noise is continuous when ever the A/C or fan is working. The A/C is directly below the master bedroom in the basement. This is a new house.
Any advice would be greatly appreciated.
Thanks,
The U
 
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  #2  
Old 06-03-06, 05:08 AM
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Take the return cover off and see if the noise goes away.
 
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Old 06-05-06, 02:32 PM
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Mattison,
You are AWESOME! Thank you so much. That fixed the problem. why I did not think of that I will never know.
Thank you again.
The U
 
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Old 06-05-06, 03:06 PM
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You may have a seriously undersized return, list the face sizes of all returns and the unit tonnage and we will see where you are at. You may need to enlarge the return or add another one. A FPM flow of over 1000 FPM can cause noise, most residential systems are designed to be well below that. a lot of times what was designed and what was put in by the installers may be a bit different.
 
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