So far I hooked it up and tested it , filled a five gallon bucket with hot water, it is the perfect temp for a shower,the flow valve that came with it broke when i tried to tighten it to get it to stop leaking,just hooked it directly to sharkbite pex fitting,seems to work fine without the valve. it is hooked up to a 2 poll 20 amp breaker, will have to wait till the rest of my bathroom is finished to give a better review.