Furnace Blower Wheel Noise

The blower wheel is attached to the blower motor shaft with a set screw.

Furnace blower wheel noise.

Check the set screw to ensure that it is properly tightened. A broken motor mount causes the blower wheel to drop and rattle against the housing. Most likely the blower fan has become loose and is creating the sound by hitting against the blower house casing. Loud clanking or scraping classified as a metal against metal sound signals a serious problem with the furnace s blower wheel.

Moreover the motor mount. If you hear this sound turn off your furnace immediately. The blower wheel blows air out of the furnace and through the house. Blower wheel is loose from the motor wheel.

A broken blower wheel will vibrate in its housing resulting in squealing scratching and banging sounds. My furnace which is 13 years old has 3 8 acoustic soundproofing inside the blower cabinet with a cut out for incoming air. Sometimes a broken blower wheel can also be the source of this distinct noise. The blower cabinet in most older furnaces is essentially a hollow tin box with a motor and fan hanging from the top.

Having one of our techs tighten the blower wheel can often resolve this problem. How to reduce heating cabinet noise. A few blower wheel problems include. 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. When your furnace blower wheel is broken it will make your furnace sound like metal scraping against metal and will really hurt your ears. The wheel may have become loose and is making the noise by hitting the blower casing.

The blower wheel is broken and. The cause of this noise is usually a problem the furnace s squirrel cage blower wheel. Here are some of the reasons your furnace could be making a funny noise.