hydrogen gas generation in my water heater
I have a Bradford and White water heater installed 4 months ago and it is producing a LOT of hydrogen gas. i.e. I get gas bubbles if the hot water not used for longer than half an hour. If it sits unused for a couple of days, the amount of gas released is enough to set off my explosive gas detector in the kitchen when I flush the gas out of the kitchen faucet(this is reproducible). My last task (which was an A.O. Smith) never had this problem, but years of nobody flushing out the sediment meant that it didn't have much space for hot water anymore.
The customer service with Bradford and White has been very rude. They basically are insisting that there's something in my house at fault, so I've spend hundreds of dollars and vacation time on electricians and plumbers to address what they say I have to check before they'll acknowledge anything (check grounding on pipes, check for stray voltage, replace anode with an aluminum alloy). Even the first call with them was somewhat combative even though I was asking only what I should do that that point.
Everything has checked out so far, and I'm in the process of getting the anode changed today (at my expense because the warranty doesn't cover that). The plumbers that I've talked to say that this should not be necessary on the city water that I have and that the anode rod change will likely not solve the issue. But that's being installed today as the manufacturer instructed.
Anybody have any suggestions for what I should do if this step doesn't work? All I know is that the technical support guy that I last talked to was constantly interrupting me, insisting that my house and water are the problem, not the tank and was getting belligerent enough that I basically had to tell him to calm down. He also said that some hydrogen gas production is normal, which is fine, but the volume I'm getting is beyond what I think is an acceptable limit (sets off alarm=not acceptable). I just don't know whether I'm stuck with what I think is a safety risk or whether there's something else that I can do. At this point, I don't think that if there's something wrong with the tank that Bradford and White will do anything about it other than blame something else.