We bought our house about 10 months ago and it's roughly 60 years old. The hot water heater was on it's last legs so we replaced it. The new hot water heater works fine, except the PRV leaks. I'm probably losing about a gallon a day into a bucket. The temperature is set below factory default. I replaced the valve thinking that maybe it was faulty. The new valve does the same thing.
I checked the water pressure in the house, and it was above 80 psi. I tested it on the basement basin sink and the garage hose. There is a pressure reducer valve, so I reduced the pressure down to 55 or so. The hot water heater stopped leaking like a sieve, but now I don't have much water pressure in the kitchen sink, bathroom sink, toilet, bathtub and so on. Both hot and cold are affected.
It seems to me that the water pressure in the house was bad for the previous owners and they just backed the pressure reducer back. The old hot water heater's PRV was corroded and didn't work.
To sum it all up the water pressure, both hot and cold, is bad going upstairs. From what I can gather from the leaky PRV at the hot water heater, the issue is "after" it in the system. I'm assuming I'm going to have to bring in a pro, but I'm hoping someone might be able to explain what could be going wrong.
Great forum. Thanks in advance!