Hvac Blower Fan Noise

The louder the sound the more serious the problem can be.

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. They can last as long as 30 years with proper hvac maintenance. But they run a lot and move thousands of cubic feet of air every year. 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. 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. 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.

It also could a pulley with failing bearings. In reality not all installations are perfect and many fans are set at too high a speed. When the fan turns on in your compressor unit it should not rattle. These sounds may be an indication of loose hardware or a failing motor.

Eventually things wear or get loose and will begin making noise that is carried into your living spaces. This could mean that your compressor is 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.

The blower wheel and housing will also squeal when they malfunction. 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. Outdoor fan motors and indoor blower motors squeal loudly when they re going bad. Rattling from the outside compressor or fan unit another common hvac noise is rattle.

It s often possible to select a lower fan speed which will reduce static pressure as well as air noise. Loud blower fan sometimes your furnace blower motor is just simply too loud and becomes a nuisance. This fix only works when the fan speed was too high in the first place. Quiet a loud blower motor.

If the noise is similar to a scream your compressor may be failing.