I have a pressure pump that cycles between 35 psi and 50 psi, which is not a problem. I also have a Bosch tankless water heater (functions fine, near as I can tell). The problem is that when the water pressure drops to the bottom end, the flow through the water heater slows, and the water heats up, cause an issue with shower water temperature. Then, at the high end of the pressure cycle, there is a lot of pressure to push water through the heater, so the temp goes down. Is there such a thing that will stabilize my water pressure at the tap, regardless of the inlet pressure (say, to within 5 psi or so)? Thanks.
If that is correct then that is not right that I know of, should be 30-50 and the pressure tank at 28psi with no water in the pressure tank...
Making sure that is going on will help in getting rid of that low end bounce that the water sounds like it is doing,, drops in pressure for just a second or two and then is back up again... pressure in the pressure tank is not right with the pressure switch.