Blower wheel is loose from the motor wheel.
Furnace blower wheel noise.
The motor mount broke causing the whole blower assembly to drop and hit the housing.
Most likely the blower fan has become loose and is creating the sound by hitting against the blower house casing.
Blower wheel loud clanking or scraping classified as a metal against metal sound signals a serious problem with the furnace s blower wheel.
If you hear this sound turn off your furnace immediately.
Sometimes a broken blower wheel can also be the source of this distinct noise.
The blower wheel is broken and needs replacing.
A few blower wheel problems include.
If you hear this noise turn off your furnace immediately to prevent any further damage to the furnace.
Having one of our techs tighten the blower wheel can often resolve this problem.
Get a professional to tighten the wheel.
A broken motor mount causes the blower wheel to drop and rattle against the housing.
The blower wheel can be making the scraping noise for different reasons.
The wheel may have become loose and is making the noise by hitting the blower casing.
Have a pro take a look to avoid further damage to your furnace.
The motor itself can also become out of balance.
The cause of this noise is usually a problem the furnace s squirrel cage blower wheel.
Thumping and vibrating sounds are the results of an unbalanced blower wheel.
A broken blower wheel will vibrate in its housing resulting in squealing scratching and banging sounds.