A failing inducer motor may create a noise shortly after a heating cycle begins.
Carrier furnace inducer fan noise.
One common cause of a loud bang or boom is a dirty burner in your furnace.
The blower wheel blows air out of the furnace and through the house.
Having dirty burners in your furnace can cause a delay in ignition.
There is also a pvc screen inserted in the end of the combustion air flue so it is highly unlikely anything is in there.
I am trying to replace my condenser fan motor unit is a carrier 25hbr342a300.
The motor shaft and the wheel will be noisy as it turns.
So the gas will build up instead of the gas igniting immediately.
The specs on it are 1 8 hp 810 rpm 208 230v a 0 90 cap 5 00 read more.
The original condenser fan motor is a carrier 5kcp39efy465s.
It s above freezing here all the time no chance of ice in the flue.
The blower wheel is attached to the blower motor shaft with a set screw.
This could be a tapping noise or a humming or whirring sound.
Carrier 58mvp inducer fan noise.
If you hear a sound like a loud bang or boom coming from your furnace you would certainly be wise to be concerned.