Hello,
I had a Rheems 50 gallon electric water heater put in 2 weeks ago to replace i broken one. In the last 2 weeks I have discovered that it is leaking out the relief valve. The temperatures are set at 110, so it shouldn't be a problem with the water being to hot. I talked with the people who put it in for me, and they said I might need an expansion tank put in. I wanted to ask some of your opinions, because I didn't have an expansion tank on before. I can't understand why I would need one now. Is it normal nowadays to have to have one of these put in? Or is there something else I should be looking at? Any help would be appreciated!