Yes, Mine was way too loud as it built pressure when nearing the shutoff point.
I also moved the electric water pump because two of the PEX water lines were forced hard over the top and against the pump head. I left it up on the main level though, so that I would have extra room for another noise reducing mod (more on that later). It sounded like a damned machine gun as the pump built up pressure just before shutting off. Would it kill them if they had to mount the pump on a 50 cent piece of rubber pad to isolate the vibration and noise of the pump??!!!
Well, now that is all done with a 4 layer alternating density pad, about 3/4" thick, that I concocted the other day out of medium dense neoprene rubber and soft closed cell foam. It helped a lot and cut down the noise quite a bit. It already had soft hoses on the pump inlet and outlet. I think the 2 PEX hoses that were laying tight against the pump head was the biggest culprit. Next, I am going to build a acoustic foam lined doghouse to cover the pump and cut down on pump noise some more.
While I was in there I did a lot of other cleaning up. What a complete rats nest it was under there!! The furnace flange was mostly separated from the floor duct, held in by one screw and some aluminum tape which was not doing the job. The basement was nice and toasty, while we were freezing our patooties off in the coach, ... Gee, I wonder why?!?!?! 3 more screws fixed that problem.
There were two flat 110v quick disconnects laying on the floor, 6" from the water pump, just waiting for a little flooding so they could short out and fry the whole electrical system. Got those up off the floor.
Untangled and reorganized all kinds of crazy configurations of wires and PEX lines to eliminate them from resting against any possible sharp edges to guard from electrical shorts and water leaks.
Tightened all of the Flair-it fittings on the water system. Used foam pipe insulation to isolate PEX lines from the floor, each other, and any chafe points.
Used split rubber hose to grommet sharp edges where wires and hoses came through "bulkheads".
I can't believe the things that they can get away with and still get the RVIA seal of conformance! Heck, on our model, the kitchen sink plumbing is directly above where the electrical panels are, with no shielding from a possible fixture failure and resulting waterfall. Gonna have to do something about that soon.
Next on the list is dropping the belly and search for more disasters waiting to happen! The fun just never stops!!!!