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I recently had to replace my two year old GE Smartwater (Rheem) 50 gallon hot water heater (12 year warranty) after only two years due to a leaking tank.
When I called Rheem to order a replacement, they indicated that the failure might be due to high water pressure. They suggested installing an expansion tank to reduce possible excessive pressure.
I asked my plumber about this and he said he has only installed an expansion tank in 1% of his hot water heater installs. It was most likely a defective hot water tank.
The previous hot water heater was an AO Smith Conservationist and lasted 12 years on a 10 year warranty.
I attached a water pressure test gauge to the drain valve on the hot water heater the average pressure over a 48 hour period is 63 psi although it spikes as high as 80 psi when a washer or dishwasher valve closes.
Rheem suggests an expansion tank. My plumber is skeptical. The water pressure test gauge company (Watts) suggests something called a "Watts Governor 80",which apprears to be an expensive toilet tank flush valve which reacts to high pressure by releasing water into the toilet tank as necessary.
I am confused. Is my pressure to high? Would you install an expansion tank, toilet valve governor or do nothing? What should a vigilant homeowner do?