In the master bathroom on the second floor, there is a shower stall that does not contain a bathtub or diverter valve. The shower stall only contains a knob to turn the shower on, and then the shower head itself.
When I turn the shower water on, I can hear a whistling noise, and its volume changes depending on the position of the shower head. (The shower head does not have a rotatable head that changes the spray pattern. By “position of shower head,” I mean that when I move the shower head left or right or up or down, it can change the volume or pitch of the whistling.)
Also, with the shower running, if I turn on the HOT water to the sink in the same bathroom, the whistling changes (I can't really discern whether the volume increases or decreases).
What could be causing the whistling? (The shower head is a higher flow variant from which I removed the internal restricter. It's less than a year old. I already tossed the original that was on it when I purchased the house.)
Best Answer
Try putting a few screens where the water-saver was, to restrict it somewhat but not like it was when it came from the factory. Sometimes when you totally remove these, the flow gets all wack. Next time try to disassemble the water-saver; remove that little O-ring, but keep that part with the eight or so holes in it, in there. E.g.,
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They sell replacement water-savers. You will probably need to pick and choose which parts of it you install, to preserve good flow.