Hvac Blower Fan Noise

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.

Hvac blower fan noise.

This could mean that your compressor is failing. It s often possible to select a lower fan speed which will reduce static pressure as well as air noise. In theory your hvac installer configured it properly during installation. For some units this sound is normal upon start up.

It also could a pulley with failing bearings. Bearings should generally last a long time on blower motors. 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. The louder the sound the more serious the problem can be.

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

In reality not all installations are perfect and many fans are set at too high a speed. But they run a lot and move thousands of cubic feet of air every year. Outdoor fan motors and indoor blower motors squeal loudly when they re going bad. 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.

Loud blower fan sometimes your furnace blower motor is just simply too loud and becomes a nuisance. Quiet a loud blower motor. When the fan turns on in your compressor unit it should not rattle. Loose parts on the furnace can be the reason behind the unwanted noise you re experiencing as the blower runs.

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. Blower and fan noises such as squeaks squeals and rattles may be transmitted through the duct system. These sounds may be an indication of loose hardware or a failing motor. They can last as long as 30 years with proper hvac maintenance.

Rattling from the outside compressor or fan unit another common hvac noise is rattle.