Attic Fan Just Hums

After exhausting all other possibilities i checked out the attic and sure enough the attic fan is making the noise.

680 the fan youtube. In order to get rid of the hum you need to either operate the fan at a low speed or replace the fan with a new one that has more blades. Humming accompanied by a failure of the blades to turn is a classic symptom of a failed capacitor. Stop fan humming by using the anti hum feature if its available.

In this case running the fan on low can reduce or eliminate humming. Attic fans can sometimes start making noise whether its humming rattling or making some other annoying noise. Generally fan creates humming sound at low velocity and the noise is not heard after a sufficient long run of a fan so that every part or bearing of a fan is to be greased.

And the first signal of any such issue is the attic fan humming noise. Less expensive models often have fewer blades and no anti hum feature. There can be issues like motor dis function ball bearing damage and so on.

Fan shudders and rattles. Generally the more blades you have the quieter the fan runs. It just humsbuzzes as if something is stuck in the fan blades and its trying to turn but i wasnt able to locate an obstruction.

The attic fan tends to makes a humming noise when it has a few blades and is running at a high speed setting. If the fan doesnt start running you may have a bad fan motor. An annoying hum is a common complaint with whole house fans.

Parts can come loose or erode from high amounts of fan usage while turning the speed up to high can cause a persistent loud hum. To check turn on the fan so that the humming sound is audible and try turning the blades manually. Running an attic fan isnt just running any other fan of your home.

Therefore take this noise issue as an indicator and step ahead to solve it right away. Most ceiling fans have a start capacitor that provides the torque necessary to get the blades turning. The noise is periodic it seems come on for about 30 seconds every ten minutes or so.

Anyways fast forward to satruday night no heat i was in the attic for 2 hours. If you have difficulty getting the blades to turn there may be debris wrapped around the fan axle or the. You took over its job of kick starting the fan by pushing the blades.

Fan just hums and i spin the squirrel cage to help the motor blow and it starts up runs for about 30 seconds and then shuts down and just hums loudly. If the fan takes off and then keeps going on its own you more than likely have a bad start capacitor. An attic fan with a few blades may pick up a humming noise as it runs on a high speed setting.

Attic fan making humming noise.