The blower wheel can be making the scraping noise for different reasons.
Furnace blower wheel loose.
When your furnace blower wheel is broken it will make your furnace sound like metal scraping against metal and will really hurt your ears.
Easy to open up and change the blower motor as a unit.
It is made for electric motors.
Really old ones might have grease cups that need to be filled with bearing grease you will probably need to remove the access cover to get at them.
The duct cleaner wanted a couple h.
The blower wheel is attached to the blower motor shaft with a set screw.
I did have to change the capacitor on the compressor outside last year and no issues until now.
Older blower wheels will also likely require oil.
The motor shaft and the wheel will be noisy as it turns.
Cleaning the blower wheel on a furnace air conditioner takes a little work but is supposed to improve your air quality.
Took a closer look at motor shaft to try to detect any misalignment couldn t really tell.
If you hear this sound turn off your furnace immediately.
The wheel may have become loose and is making the noise by hitting the blower casing.
If the set screw is loose the blower wheel will wobble on.
If left long enough a loose blower wheel can damage itself and the housing.
Step 4 oil the blower good maintenance on a furnace blower whether it is a direct drive motor or v belt and pulley system is always beneficial in avoiding malfunction.
Blower wheel was balanced just fine some dirt not horrible.
You will most likely need to replace this part on your furnace but don t worry it is a fairly easy repair and can usually be done in an hour or so.
A broken motor mount causes the blower wheel to drop and rattle against the.
Having one of our techs tighten the blower wheel can often resolve this problem.
No contact with housing or loose blades.
Blower wheels can come loose and hit the blower housing causing a scraping sound.
The blower wheel blows air out of the furnace and through the house.
I took it apart replaced with new blower wheel wheel was still not turning true.
I suspect it s the blower wheel or a bearing in the motor going out.
14 years old at this point but still blowing very cold air.
Use 3 in 1 motor oil.
Most likely the blower fan has become loose and is creating the sound by hitting against the blower house casing.
A broken blower wheel will vibrate in its housing resulting in squealing scratching and banging sounds.
Sometimes a broken blower wheel can also be the source of this distinct noise.
If the belt is loose the pulley on.
This is not a huge noise just a little annoying.
Loud clanking or scraping classified as a metal against metal sound signals a serious problem with the furnace s blower wheel.
Unit is a bryant 310jav066110acja.
Keep one on hand in case you need to change it.
