The unit is at least 12 years old. The water is coming out the pressure relief valve pipe. When I turn the heat off and the water cools, it stops to a drip. But when I turn the heat back on and the water is heated back up, it flows out pretty fast. Is this a bad pressure relief valve?
I've already tried flushing it out by opening the valve manually many times. This does nothing.
I should also mention there is a small leak under the unit somewhere. Nothing major and it's been there awhile, so I think this is a seperate issue.