Where tank leaks start
Water around a water heater does not always mean the tank is failing. The cold inlet and hot outlet connections on top can drip, and that water runs down the jacket to the floor. The temperature and pressure relief valve on the side can release water if pressure or temperature is too high, or simply dribble if the valve is worn. The drain valve near the bottom can leak at its threads or washer.
If the water is coming from under the tank, from the bottom of the jacket, or you see rust streaks at the base, the inner tank itself has likely corroded through. That kind of leak does not get better, and a tank that is close to failing can let go suddenly. In apartments and condos around Englewood, heaters are often in closets right next to bedrooms or above other units, which makes a pan with a drain and a leak alarm especially worthwhile.
Shutting it down
Turn off the energy
For a gas heater, turn the gas control knob to off or pilot. For an electric heater, switch off its breaker. Do this before draining, so the heating elements or burner are not running on an empty tank.
Close the cold supply valve
The valve is on the cold pipe going into the top of the tank. If it will not close or keeps leaking, close the main shutoff.
Relieve the pressure
Open a hot faucet somewhere in the home. This stops the tank from pushing water out of a leak.
Contain the water
Put towels and a pan around the base. If the tank itself is leaking, a plumber can drain it through the drain valve with a hose to a floor drain or outside. The water may be scalding.
Call a plumber
Water heater replacement involves gas or electrical connections, venting and code requirements; it is usually a job for a licensed plumber with a permit.
Useful facts
- Typical life
- Many tank heaters last somewhere around eight to twelve years; the serial number often encodes the manufacture date.
- Relief valve
- The pipe from the relief valve should run down toward the floor or a drain. Never cap or plug it.
- Pans and alarms
- A drain pan piped to a drain and a leak alarm limit damage from a slow leak.
- Hidden damage
- Water around a closet heater often spreads under walls and flooring into the next room.
Common questions
Can I keep using the heater with a small drip on top?
A loose fitting on top can often be tightened or replaced. A leak from the tank body cannot be repaired and the heater should be replaced.
General information for Englewood, not a quote or professional advice. In an emergency, call 911.