Attic Exhaust Fan Making Noise

Blower and fan noises such as squeaks squeals and rattles may be transmitted through the duct system.

Attic exhaust fan making noise.

The result is a cooler attic space with plenty of air exchange. An attic fan with a few blades may pick up a humming noise as it runs on a high speed setting. Due to regular wear and tear these bearings can become worn out or lose their lubrication ability. Remove the current worn out bearings and replace them.

After attic fan installation ac still off during day. Attic fans also have small ball bearings that help lubricate the fan s movement. If it s loose it will wobble and vibrate against the surface creating a huge racket. The blower wheel and housing will also squeal when they malfunction.

And the first signal of any such issue is the attic fan humming noise. The only way to get rid of this hum is to continually operate the fan on a low setting or replace the fan with a newer one with more. This is actually the most common noise issue with attic fans. This can cause the fan to start making constant noise and in some cases even a loud squealing sound.

The attic fan kept my house cooler by 8f compared to pre fan installation days. Therefore take this noise issue as an indicator and step ahead to solve it right away. The mount can become loose especially on fans that are installed on the roof. Outdoor fan motors and indoor blower motors squeal loudly when they re going bad.

Running an attic fan isn t just running any other fan of your home. Turn on the exhaust fan switch and the fan should be just like new and no longer making noise. There can be issues like motor dis function ball bearing damage and so on. Also make sure the exhaust of the attic fan is high and near the roof with no obstructions.

During the summer an attic can be 40 to 50 hotter than the outside temperature which in turn heats up the house very quickly. This problem is pretty easy to fix. You ll just need a screwdriver to tighten the loose screws on the mount. This was observed on numerous days following the installation.

With an attic fan you can cool the attic to the same temperature as it is outside greatly reducing the house from heating as quickly. During workdays would leave air conditioner off when leaving in the morning. Temp 92 f at 5pm. For some units this sound is normal upon start up.

Attic fans perform this ventilation by pushing hot air out into the environment while also pulling fresh cool air into the attic.