Its been awhile since I posted anything here, but I have a question.
I build homes and I have a couple that we had the two year walk thru, and my homeowner had a concern about one of the two Rheem Guardian 50 Gallon Natural Gas Water Heaters. The top of one of the two heaters is imploded and wavy, the other heater looks fine. He told me the heater with the imploded looking top makes all sorts of noise when a fixture is opened and closed, and he demonstrated and it does indeed make noise. It should be mentioned, that per code there is a expansion tank. It should also be mentioned the heaters are not turned up very high at all.
A call to a plumbing supply house that stocks Rheem stated Rheem will not warrant the tank until it fails catastrophic, because even with a imploded top, its still "working", a call to my service plumber confirmed the same thing, but my plumber told me that its best to replace the heater.
The original plumber who plumbed the houses became a victim of the housing market, and is out of business.
Any thoughts, what would cause the heater top to bulge in one place and implode in another? I wanted to shut down that heater immediately, but we did the walk thru on Thursday and he is having a house full of people this Christmas weekend and didn't want to run out of hot water, keeping in mind were talking a 5 bedroom, 7 bathroom, 7000 sq ft. house. He's a well informed HO so if the tank shows any more stress he said he'd shut it down.