Re: Preasure varies in shower
According to the data sheet on that WH, it restricts water flow, more restrictions at higher temp, so you are bound to see a difference between it's output and the unrestricted cold water.
Your water flow going up and down. Are you on a well or city water? On a well the pressure pump pressure is set by the pressure switch and generally has a 20 Lb variance between on and off. As an example the pump runs the pressure up to 40 Lbs. and shuts off, it won't kick on again until pressure drops to 20 Lbs. The WH may be having trouble adjusting to the pressure difference.
The shower head may be a water saver head and the hand held unrestricted so you would run water through the hand held faster than the shower head.
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