Ratings and Reviews for  Grundfos Amazon STN-2.0 Bar Universal Head Twin Impellar Shower Pump 96787505

The pump noise level is low, and high quality, and it doesn't matter if your house plumbing system is positive or negative because it works for both. I mean do the job as I expected. I wish it were my first choice. It would save the wasted money that I had spent before I bought the Grundfos .