Furnace Blower Wheel Noise

If the set screw is loose the blower wheel will wobble on the motor shaft and the wheel will be noisy as it turns.

Furnace blower wheel noise.

The blower cabinet in most older furnaces is essentially a hollow tin box with a motor and fan hanging from the top. A broken blower wheel will vibrate in its housing resulting in squealing scratching and banging sounds. Blower wheel is loose from the motor wheel. When your furnace blower wheel is broken it will make your furnace sound like metal scraping against metal and will really hurt your ears.

Most likely the blower fan has become loose and is creating the sound by hitting against the blower house casing. The wheel may have become loose and is making the noise by hitting the blower casing. The blower wheel is broken and. How to reduce heating cabinet noise.

Here are some of the reasons your furnace could be making a funny noise. Check the set screw to ensure that it is properly tightened. Loud clanking or scraping classified as a metal against metal sound signals a serious problem with the furnace s blower wheel. The cause of this noise is usually a problem the furnace s squirrel cage blower wheel.

The blower wheel can be making the scraping noise for different reasons. Get a professional to tighten the wheel. If you hear this sound turn off your furnace immediately. A few blower wheel problems include.

My furnace which is 13 years old has 3 8 acoustic soundproofing inside the blower cabinet with a cut out for incoming air. Having one of our techs tighten the blower wheel can often resolve this problem. If you hear this noise turn off your furnace immediately to prevent any further damage to the furnace. Shut your furnace off if you have a compromised mount.

Thumping and vibrating sounds are the results of an unbalanced blower wheel. A broken motor mount causes the blower wheel to drop and rattle against the housing. Sometimes a broken blower wheel can also be the source of this distinct noise.