Outdoor fan motors and indoor blower motors squeal loudly when they re going bad.
Hvac blower fan making noise.
It does take a special type of lubricant though not an ordinary household type.
If your furnace blower motor is making noise try not to panic.
But they run a lot and move thousands of cubic feet of air every year.
The sound also might mean that the motor needs lubricant which you may or may not be able to do yourself depending on the furnace make and model.
If your interior ac heat fan blower motor is making noise like a card in a bicycle spoke then you probably just need to clean.
The only true moving parts in your furnace are the blower fan and motor.
Quiet a loud blower motor.
Eventually things wear or get loose and will begin making noise that is carried into your living spaces.
There could be several explanations for the noise and even.
Strange noises coming from your hvac system are never a good sign.
Refrigerant leaks resulting in your air conditioning freezing up.
However over time the bearings in the fan motor can give out usually making a screeching sound or the fan belt can wear out causing a squealing noise.
If it is that belt should be replaced.
The blower fan is responsible for pulling warm air from your home to be cooled then pushing that cold air back into your home.
If it s conditioning not cooling this could be why.
An unusual sound can cause home owners to worry leaving them wondering if there is something majorly wrong with their equipment.