Reduce Attic Fan Vibration

Due to regular wear and tear these bearings can become worn out or lose their lubrication ability.

Reduce attic fan vibration.

Clean all the fan blades with a damp cloth then dry them off with a clean dry cloth. Manufacturer airvent inc model 53850 suggested use up to 2100sqft. Crappy fan or improper mounting. Before inspecting individual parts of your attic fan and fixing anything make sure that the fan is detached from its power source.

If you feel any vibration of building components you can be sure it is being transferred back into the building. 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. This can cause the fan to start making constant noise and in some cases even a loud squealing sound. If the fan itself is touching any building components adjust the fan supports so it does not do this.

A newly installed attic fan vibrates. If this does not stop the noise then slide a washer over the screw so it will be positioned between the screw and the fan. Attic is 1 500 sqft. The attic fan tends to makes a humming noise when it has a few blades and is running at a high speed setting.

Feel the drywall inside the home that is closest to the fan location for vibration. If the fan is in the attic feel any framing that the fan is attached to or the pipe rubs up against. 1 5500cfm attic fan with thermostat and humidistat. And if it s powered by solar panels turn those off instead.

If it s an electric fan turn the mains off. A gable attic fan is attached to the attic wall by screws and if they are loose the vibration can cause an awful noise. Attic fans also have small ball bearings that help lubricate the fan s movement. Detach the fan from the power source.

Tighten any loose screws. Turn the power back on to help dry the blades and see if the fan still vibrates. A significant amount of that cooling is likely to come from conditioned air being sucked up from the house below. Remove the current worn out bearings and replace them.

One reason power attic ventilators don t help in my original article i focused on makeup air.