Finding a quiet domestic water pump?

darrenheaphy

We have the Grundfos MQ3-45 A-O-A-BVBP pump (link), it's unbelievably loud and something we've just ignored for years! It's in a cupboard, next to a bedroom, never looked at, self starting and stuff. It's not vibrations or the like causing the noise (installed dampeners etc), the unit itself is just really really loud. I honestly have no idea if all pumps are loud and whether it's even worth buying an alternative. Any suggestions?

10-10-20

I know you're saying that there isn't vibration being caused but the way that the pump is installed the noise off the unit is transferring into the pipework and into the wall where that small wooden lat is located. Try free up that white pipe-clip a little and does it reduce the noise off the unit?

Otherwise, I'm shopping for a booster pump at the moment also, I'm looking at ST-Monsoon, Grundfos and Salamander, but I'm only going to buy a unit with brass impellers and machined brass stampings housings. All or most of the manufacturers provide noise data on their pumps, but I don't know which are best in those terms.

Good info here anyhow:

https://theshowerdoctors.ie/product-category/pumps/

darrenheaphy

Thanks @10-10-20, no it's definitely the unit itself. I guess I'll get someone out to look at it, not sure if all units are more or less as noisy so buying one myself could be a waste of time and money. It's only a problem now as the room next to it is going to be occupied, otherwise we just ignore the airplane engine noise; made a video of it https://www.youtube.com/shorts/aFdnSMolD-8

10-10-20

https://www.boards.ie/discussion/comment/120966190#Comment_120966190

Ah yeah, that's sounds like a loose component!