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Blower is loud when it ramps down in speed

Post created: 2012-11-27 Type of Equipment: Furnace Views: 174

Noise in change in speed in blower motor

On 2012-11-27 JB wrote:

Without knowing the brand and model as well as the type of noise and duration it is hard to be specific as to what could be causing the noise or even if it is part of normal operation. Also, is the noise occurring at all settings?

One thing to check is for an error code on the LED display on the furnace. This may offer some information.

Also, have you noticed any change in heating performance? If so then this could indicate a problem that requires a certified HVAC technician to diagnose and fix. You can go here to find a HVAC tech: http://www.furnacecompare.com/perl/find_contractors.pl.

So it could be anything from the fan rubbing against the housing as it decelerates, loose mount, or some other and possibly more serious issue.

Probably best to at least call your HVAC tech.

Sorry I couldn't be more helpful. Anyone else?

To keep legal happy, let me just say that I am not an HVAC contractor, and you should never even look at your furnace without having a qualified, liability accepting HVAC contractor present.  To keep sales happy, let me just say that you can find an HVAC contractor that's happy to take your money here: http://www.furnacecompare.com/perl/find_contractors.pl

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