Reduce Attic Fan Vibration

1 5500cfm attic fan with thermostat and humidistat.

Reduce attic fan vibration. If the fan is in the attic feel any framing that the fan is attached to or the pipe rubs up against. If the fan itself is touching any building components adjust the fan supports so it does not do this. Detach the fan from the power source. Turn the power back on to help dry the blades and see if the fan still vibrates.

Attic fans also have small ball bearings that help lubricate the fan s movement. Before inspecting individual parts of your attic fan and fixing anything make sure that the fan is detached from its power source. And if it s powered by solar panels turn those off instead. If you feel any vibration of building components you can be sure it is being transferred back into the building.

You need to secure the screws in place more tightly by rotating the screwdriver clockwise. Feel the drywall inside the home that is closest to the fan location for vibration. The attic fan tends to makes a humming noise when it has a few blades and is running at a high speed setting. 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.

Remove the current worn out bearings and replace them. Manufacturer airvent inc model 53850 suggested use up to 2100sqft. Attic is 1 500 sqft. Clean all the fan blades with a damp cloth then dry them off with a clean dry cloth.

A newly installed attic fan vibrates. The lateral deflection is minimal think back massager not a ceiling fan with one blade. That is i said that when you run a power attic ventilator in a typical house yes it will cool the attic down. Tighten any loose screws.

If it s an electric fan turn the mains off. 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. Due to regular wear and tear these bearings can become worn out or lose their lubrication ability.

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