Exhaust Fan On Roof Making Noise

Trouble shoot why a fan is noisy.

Exhaust fan on roof making noise. This can cause the fan to start making constant noise and in some cases even a loud squealing sound. Master flow egv5 gable mount attic ventilators are master flow egv5 gable mount attic ventilators are a great choice for exhaust ventilation. A new kit from broan and nutone lets you cut fan noise almost in half meaning the fan is barely audible. The only noise a running exhaust hood fan should make is the hum of the motor and any noises outside of that humming range should be taken as a warning.

Installing the new fan and motor only takes about 10 minutes with no rewiring or duct work required. They can quickly remove a larger volume of hot and or humid air from your attic compared to static ventilation which helps save money on your heating and cooling. Due to regular wear and tear these bearings can become worn out or lose their lubrication ability. Once the fan blade or blower wheel is spinning properly and no longer making noise use a small drop of lubricant on the motor shaft as this part can squeak and cause the noise.

The motor shaft should not move at all. Insulation will upset the balance of the blower wheel creating noise and reducing air flow. It is easy to ignore these noises however further investigation into these noises may help prevent an exhaust hood failure which could eventually lead to a multi day kitchen shut down. Exhaust fan motor the exhaust fan motor bearings might be worn out.

I ve seen fans put in at all angles and with ceiling cutouts that don t match the fan can shape. Exhaust fans help ventilate the air in a room. Cut through any sealer that may be present. Lift up the edges of the surrounding roof shingles so you can see the edges of the vent.

Once your bathroom exhaust fan is free of dust and dirt and no longer making any squeal or loud noises put the clean vent cover back in place. The builder didn t seal the fan to the ceiling. Attic fans also have small ball bearings that help lubricate the fan s movement. Climb onto the roof and locate the vent that is causing the noise.

Remove the screws holding the vent in place. Remove the current worn out bearings and replace them. In areas such as the kitchen or bathroom they not only help pull the heat out of the room but also moisture build up that could otherwise cause mold. The kit works on most broan nutone and nautilus bathroom fans most bath fans are one of these brands.

To determine if the motor bearings are worn out try wiggling the motor shaft back and forth.