this post was submitted on 08 Aug 2023
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First time ever installing a water heater, or doing any plumbing... (lemmy.world)
submitted 1 year ago by [email protected] to c/[email protected]
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[โ€“] [email protected] 0 points 1 year ago (1 children)

If it's necessary then how did my last tank make it 20 years without one?

[โ€“] [email protected] 1 points 1 week 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.