I have two showers in my house, one seems to be noticeably cooler no matter what I try. Both are Symmons Temptrol model A. The house is mostly PEX except where copper is required.
I cannot take a shower in one because the hot water never gets hot enough. The sink to the same bathroom has nearly scalding water.
I have replaced the spindle assembly and the hot and cold seats hoping that this would help, with no joy.
I have backed out the hot-water limit stop screw to the point where the handle now spins nearly 500 degrees (way way past a full turn.)
The other shower is just bearable but I like a really hot shower. I have resorted to turning up the water heater which has helped, but I feel like I am missing something.
I am not sure if there is an obstruction in the pipes but with the single handle design of the shower I cannot tell the pressure of the hot water in the shower. The sink next to it has what appears to be a normal pressure.
Is this typical of this style of shower control?
Does the hot water never fully flow?
If I do have an obstruction in the pipe what would my next step be?