I see the three mounting brackets clearly.
Carrier furnace exhaust fan noise.
Having dirty burners in your furnace can cause a delay in ignition.
I have a carrier gas furnance that was making a loud whining noise.
A furnace exhaust fan in need of repair is of particular concern since it is such a critical component of your system.
The sound went away and the system is functioning.
Not only are furnace exhaust fan noises disruptive they may also indicate potential problems within your furnace that need to be repaired immediately.
These fans can be direct drive to an electric motor or attached to a belt and drive wheel assembly if the fan is located far from the motor.
Is the motor difficult to replace.
Check the set screw to ensure that it is properly tightened.
Is there also a screw bolt at the end of the shaft that must be.
Several problems can lead to a noisy squeaky fan.
The blower will make noise if the ductwork is undersized.
One common cause of a loud bang or boom is a dirty burner in your furnace.
If you hear a sound like a loud bang or boom coming from your furnace you would certainly be wise to be concerned.
Ours is original equipment and has been in service for 25 years but there is a wide distribution in lifetime for this component.
If you block this off to reduce the noise then your gas furnace will not operate properly and it could be dangerous.
So the gas will build up instead of the gas igniting immediately.
The motor shaft and the wheel will be noisy as it turns.
The hvac professional may not be able to easily solve your problem aside from the maintenance service i mentioned above.
I traced the sound to the electric exhaust blower motor ao smith model je1d013n.
These fans must run whenever the furnace is lit and they often cycle when the furnace is not blowing warm air because the pilot light is always burning.
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Carrier weathermaker 8000ts model 58cta070 10108 parts replaced.
My carrier natural gas fired furnace has one which makes detectable noise until the main blower comes on and then noise from the inducer fan is drowned out by the main blower noise.