I have a 10 year old house that had 6 year 50 gallon gas water heater. Everything was fine up to this past fall when the pressure relief valve started leaking about 1/2 gallon of water a week, changing the pressure relief valve didn't help. Last week the water heater finally gave up the ghost, it was leaking from the top. I replaced the water heater myself with another 50 gallon gas model (12 year) the pressure relief valve is leaking just as much water as the old water heater. I put a pressure gauge on the hose bib and average 80 psi during the day. My question is, what would of changed in my plumbing system over the years to cause the pressure relief valve to start leaking? Do I need an expansion tank or maybe reduce the pressure? Thanks! Keith
Great forum btw!