Step 1: Shut it down safely
Turn off the cold water supply valve on top of the heater. For an electric heater, switch off its breaker. For a gas heater, turn the gas control to off or pilot. Keep children and pets away from hot water.
Step 2: Find where it's leaking
Top connections - loose or corroded fittings can usually be repaired.
Temperature and pressure relief valve - leaking can mean excessive pressure or a failing valve.
Drain valve - often tightened or replaced.
Bottom of the tank - water leaking from the tank itself usually means internal corrosion, and the heater needs replacement.
Step 3: Repair or replace
Our water heater repair plumbers fix valve and fitting leaks. If the tank is leaking, we provide water heater replacement and can often install the same day. A tankless water heater is another option.
Attic water heaters
Many Texas homes have water heaters in attics. A leak there can quickly damage ceilings. Make sure the drain pan is in place and working. If water is already coming through the ceiling, read what to do about water dripping from the ceiling.
Quick Answers
Can a leaking water heater explode?
Rarely, but a stuck relief valve combined with excessive pressure is dangerous. Shut it off and call a plumber.
Is a leaking water heater an emergency?
Yes, especially in an attic or upstairs.