Hvac Blower Fan Noise

This fix only works when the fan speed was too high in the first place.

Hvac blower fan noise. If you hear the clicking noise when you try to start your ac but it won t start that s usually a sign of an electrical issue within the thermostat compressor or capacitor. Rattling from the outside compressor or fan unit another common hvac noise is rattle. These sounds may be an indication of loose hardware or a failing motor. The blower wheel and housing will also squeal when they malfunction.

Blower and fan noises such as squeaks squeals and rattles may be transmitted through the duct system. Outdoor fan motors and indoor blower motors squeal loudly when they re going bad. When you hear a high pitched squeal or whining sound coming from your furnace the issue could very well be the bearings on your blower motor. Eventually things wear or get loose and will begin making noise that is carried into your living spaces.

It s often possible to select a lower fan speed which will reduce static pressure as well as air noise. Quiet a loud blower motor. If you hear the clicking noise while the ac is running it could mean a small object has nestled its way into your blower fan so the object hits against the fan as it spins. Loud blower fan sometimes your furnace blower motor is just simply too loud and becomes a nuisance.

When the fan turns on in your compressor unit it should not rattle. In theory your hvac installer configured it properly during installation. 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.

This problem can be solved very easily if you simply add a few more screws to the air duct or even put duct tape on the loose parts. They can last as long as 30 years with proper hvac maintenance. Bearings should generally last a long time on blower motors. This could mean that your compressor is failing.

In reality not all installations are perfect and many fans are set at too high a speed. If the noise is similar to a scream your compressor may be failing. If this is the case you may have issues with your ductwork or might need to reduce the fan speed of your furnace. For some units this sound is normal upon start up.

But they run a lot and move thousands of cubic feet of air every year.