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On-line advice says residential gas water heaters last about 8 to 12 years. I have lived here for 12 years and my neighbor says my water heater was 5 to 10 years old when I bought the house. So the water heater may be 20 years old. It still works fine but I wonder if I should get it replaced while I have time to find a good plumber rather than waiting for it to fail and have to use the first available plumber? Thanks for any advice, especially from plumbers.

On-line advice says residential gas water heaters last about 8 to 12 years. I have lived here for 12 years and my neighbor says my water heater was 5 to 10 years old when I bought the house. So the water heater may be 20 years old. It still works fine but I wonder if I should get it replaced while I have time to find a good plumber rather than waiting for it to fail and have to use the first available plumber? Thanks for any advice, especially from plumbers.

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[–] • 4 pts

It's actually 5-10 for box store units. If professionally installed and a unit sold to professionals it's 10-15. Electric units go sooner than gas units because of how they are built. If you are on borrowed time, and the heater is a place where leaks will cause damage, replace sooner than later. If it's in the garage and the garage floor simply gets wet, you can ride it out until failure.