Furnace Exhaust Fan Noise

A failing inducer motor may create a noise shortly after a heating cycle begins.

Furnace exhaust fan noise.

Constantly spinning fan blades accumulate a lot of dust and dirt. That is the blower motor inside the gas furnace that blows the hot air through the hvac system ductwork. Also if there is a drive belt it needs to. Since the fan is moving quickly and quite frequently there tends to be a lot of buildup of dirt and dust.

The fan part of the vent may be part of a self contained unit near the motor or connected directly to the motor itself. What to do for a noisy furnace exhaust fan dirty fan. Clean the fan after turning off your furnace completely. How do i know if the draft inducer motor has gone bad.

Fans spin at high rates of speed and need to turn smoothly. When the power vent is noisy there are a few things that could cause this. Cleaner air means a safer and more efficient furnace. Mix this with any condensation or humidity.

The fan is in the combustion exhaust stream to provide evacuation of combustion gasses. These do have a problem with noise and if it is the bearings of the motor then the usual fix is to replace the fan motor as a unit. However there is another thing that can cause noise from a gas furnace. If you notice unusual sounds coming from your exhaust fan we recommend performing these steps to troubleshoot the issue.

Step 1 clean the dirt on the fan. Lastly those two things can cause noise all in themselves. This could be a tapping noise or a humming or whirring sound.