Furnace Inducer Fan. The inducer is the part of your furnace that houses the fan that pulls air over the furnace heat source and pushes it out through the vents. When a furnace begins a new cycle, the inducer motor is the first thing you should see kick on.

Although the range can be anywhere from $85 to $1,150, the average cost of replacing a furnace inducer motor is typically between $245 and $465. These noises may be the result of dirt or soot collecting around the fan shaft. Pressure switches ensure the motor is running according to the manufacturers' specifications.

Remove The Panel Cover Of The Furnace.
These noises may be the result of dirt or soot collecting around the fan shaft. Take out the inducer motor. Turn off the circuit breaker to your furnace.
To Fix A Vibrating Inducer Fan, Follow These Steps:
In most furnaces, the inducer assembly is made of metal, though a few models may have inducers made of plastic. This starts the furnace inducer motor for up to 60 seconds before anything else even happens. A loud humming or whirring sound when the furnace begins to run are common signs that the inducer motor fails.
Turn Off The Power Disconnect To Your Furnace So It Won’t Turn On While You’re Taking It Apart.
Flame sensor proves all burners are lit. The fan rotor further includes a plurality of blades that extend. Although the range can be anywhere from $85 to $1,150, the average cost of replacing a furnace inducer motor is typically between $245 and $465.