Joe.B
Senior Member
- Location
- Myrtletown Ca
- Occupation
- Building Inspector
Are the ducts for any of these fans tied together? It could be that two or more fans sharing a duct could be setting up some kind of oscillation. I've heard that this is one of the reasons connecting exhaust fans is no good.One of my customers has changed out fans in 3 rooms several times and each one gives the same rhythmic humming.