Problem with hot water heater after new meter installed

[Semoule]

Hi,

any update about your problem ? Did you finallly installed an expansion tank ?

I have the same problem, and indeed, all plumbers that I ask told me they d'ont really know the problem !!!! In my case, it starts after the replacement of our 40G by a 60G hot water heater tank! I suspected also a trouble with the pressure regulator (reducer valve), but your last comment indicates that it is probably not the cause!!!

Looking for advice...
Thanks

[johnjh2o]

If you have a pressure reducing valve you definitely need a thermal expansion tank. PRV valves along with reducing the pressure will have the same effect on the system as a check valve.

John

[bainboy76]

Sorry I didn't follow-up on this thread. I started a new thread. I installed an expansion tank and that fixed the problem. I have a 40 gal unit and used a 2 gallon expansion tank.