A water heater usually leaks for one of four reasons: a loose pipe fitting, a temperature and pressure relief valve that is releasing water, a drain valve that is worn or not fully closed, or a tank that has corroded from the inside. Fittings and valves can often be repaired. A leaking tank usually means replacement.
Leaks From the Top
The cold-water inlet and hot-water outlet connect at the top of most tanks. Over time, these fittings can loosen or corrode. Water found at the top that runs down the side often starts here rather than in the tank.
The Relief Valve
This safety valve lets out water if the temperature or pressure inside the tank gets too high. If it drips or discharges often, the heater may be set too hot, the household water pressure may be high, or the valve may be worn. Never cap or block this valve.
The drain valve, found near the bottom of the tank, is used for flushing sediment. It can start to drip if it is old, loose, or not completely closed.
The Tank Itself
Steel tanks have a lining that slowly wears away. Once rust breaks through, water seeps out from the bottom. A puddle directly under the tank, with dry pipes above, usually points to this. Tank leaks like this often get worse quickly.
What to Do Right Now
Turn off the cold-water supply valve to the heater. For gas models, turn the control to pilot or off; for electric, switch off the breaker. If you smell gas, leave and call your gas utility.
Once the water is off, a plumber can pinpoint the failing part and talk through repair or replacement. Because heaters, valves, and supply lines age together, an inspection of the surrounding plumbing can be useful while the plumber is there. Call JPR Plumbing at (833) 603-1840.