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Plumbers of Pennsylvania
Plumbers of Pennsylvania
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Water Heater Repair

If water is coming from the body of the tank rather than a fitting, close the cold inlet valve above it and shut off the gas or the breaker before anything else.

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When this becomes an emergency

What a pro does

The first thing sorted out is whether the tank is leaking or a fitting is. A weeping connection at the top or a dripping relief valve can be repaired. A tank shell that's rusted through can't be, and no amount of work changes that, so the honest answer sometimes arrives in the first few minutes. Where it's repairable the plumber works through the parts that actually fail. On a gas unit that's the thermocouple, the gas control and the venting. On electric it's the elements and the thermostats. Pennsylvania's water does its own damage to a tank. Much of the state draws from limestone ground, and the mineral in that water comes out of solution when heated and settles into a hard crust on the bottom of the tank, which is where the popping noise comes from as steam forces its way out from under it. The plumber also pulls the anode rod, since that sacrificial rod is what corrodes so the steel doesn't, and a spent one on an eight-year-old tank explains more than any other single check. Replacement includes bringing the venting and the relief discharge up to current requirements.

Frequently asked questions

It's doing its job, which means something is pushing the tank past its limit. That's often thermal expansion in a house with a closed system and no expansion tank, or a thermostat set too high. It's not a valve to plug or ignore, because the valve is the safety device of last resort on the tank.
Flushing can carry loose sediment out, and doing it regularly slows the buildup. Once a hard layer has baked onto the bottom of a gas tank, though, draining doesn't lift it. In hard-water areas across the middle of the state that layer forms sooner than most owners expect.
It's a metal rod inside the tank that corrodes on purpose so the steel around it doesn't. When it's used up the tank itself starts giving up metal, which is why rusty hot water is a late symptom rather than an early one. Checking the rod is one of the few things that genuinely extends a tank's life.
It can, though it's more work than it looks. The gas line, the venting path and the drain for the relief discharge all have to follow it, and in a stone-walled Pennsylvania basement the vent run is usually what decides whether the new position is practical.

Water Heater Repair?

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