Gabriele
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My husband just replaced a leaking water heater that was installed in Duvall, WA (King County) in the late 90s. There was no expansion tank.
Do we need one now or does a "Grandfather clause" apply (because the house was built in 1984 when it was not code to have one)? Also do we really have to buy a permit ($64) to be able to install it ourselves or would not having it void our home owners insurance? (Well, he just did - without the permit and he did install one in Woodinville in June, with the expansion tank because it had one before). We bought a 12 year Whirlpool water heater, if that makes a difference.
Do we need one now or does a "Grandfather clause" apply (because the house was built in 1984 when it was not code to have one)? Also do we really have to buy a permit ($64) to be able to install it ourselves or would not having it void our home owners insurance? (Well, he just did - without the permit and he did install one in Woodinville in June, with the expansion tank because it had one before). We bought a 12 year Whirlpool water heater, if that makes a difference.