"Trail Blazer" wrote

My gas hot water heater is 25yrs. old and works fine but looks its age
with a little rust around the bottom, should I replace it soon or wait
until it actually fails. How dangerous is it?

I have no idea if it's dangerous, but in my experience when
water heaters go, they don't just stop making hot water, they
spew water all over the place. That may not be true with newer
models.

If it was up to me, I'd replace the thing before I had a big water
cleanup on my hands. Other people might have a different
opinion/experience.

nancy