Honestly, I don’t know, I’m not a plumber. There are a couple possibilities, including that it was built into the water heater or the relief valve did it’s thing. Some water heaters don’t need expansion tanks at all, either. It’s generally a “just in case” thing, since the right failures in the wrong way could lead to a hot water bomb going off in your house.
Comment on First time ever installing a water heater, or doing any plumbing...
AnotherPerson@lemmy.world 1 year agoIf it’s necessary then how did my last tank make it 20 years without one?
rockSlayer@lemmy.world 1 year ago
AnotherPerson@lemmy.world 1 year ago
Yeah but that was like the coolest mythbusters episode ever /s
Rixonomic@lemmy.world 2 weeks ago
The expansion tank isn’t just for the water heater. That increased pressure puts undue strain on the entire plumbing system in your home. It will cause toilet fill valves to fail, supply lines to rupture, and possibly even pinhole leaks. A lot of plumbing issues are solved by installing an expansion tank.