I've got a Grundfos UPS 15-60 CH Pump which has got a bit noisey, with the noise being transmitted via the pipes around the house. A low frequency humming sound which is starting to get on our nerves.
I see that you can get a replacement UPS2 head unit for these,
which might be a simpler and a bit cheaper (I'd do the job myself - there are isolating valves either side of the pump).
But I wanted to get confirmation that the replacement head unit will include all the moving parts, e.g. including the impeller, otherwise I might still end up with the noise.
Anyone know enough about these pumps to confirm one way or the other?