Cause of Grundfos home booster making loud noise?
Our home booster Grundfos 3.0b makes a loud noise when water is being used, especially loud when toilet is being flushed. I’m hoping to get some help/advice what’s causing this issue!
Advice from 1 local tradesperson
I would say this is a low water pressure problem. If it's a more of a rattling noise then it would be a damaged pump.
