Thread: HVAC fan noise
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Old 01-11-2011, 08:45 PM
pgh234 pgh234 is offline
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On settings 3 and 4...the blowing air tends to drown out the bearing-type noise. However, on settings 1 and 2, I have to have the radio way up to avoid going nuts.

The pitch does not change with fan speed...but you can hear the fan spinning faster. Of course there is no noise when it is turned off. It is clearly related to the spinning of the fan blade. I have thought of just WD-40'ing something in there...but that is not what warranty is for.
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