Noisy Heater Suggestions?

[BMBLBEE]

Hi folks, I have been lurking for a while but this is my first post.

I had a 75,000 BTU FSA Cayenne heater installed in my 3 car garage a couple months ago. Within a week it started making a bad noise from the fan (like the bearings were shot). The company that installed it replaced the fan blade and motor but it stll makes a lot of noise when it's on. Sound is like the whole thing is vibrating badly but I can't find anything loose. Has anyone else experienced this kind of an issue and what did you do to resolve it?

Thanks, Bob

 

[Jay41]

Exhaust fan making noise, or main blower fan?

 

[BMBLBEE]

The main blower

 

[dave67fd]

If you can grab the fan blades (with unit off/power disconnected) move it vertically and horizontally. If it has a significant amount of movement it could be a bad bearing causing excessive vibration and noise. Although these motors are oil-less, and it appears to be that the bearing is the case, you can squirt a small amount of penetrating oil at the front and/or rear bearing and see if it calms down, might last a bit longer.

 

[Jay41]

It's under warranty, have the installing co. fix the problem.