A leaking water heater is most often caused by a leaking drain valve, loose water connections at the top, a failing temperature-pressure (T&P) relief valve, or a corroded tank. Turn off the water supply and the power or gas to the unit, then check where the water comes from: leaks at the connections or T&P valve can usually be repaired, but a tank leaking from the bottom means it has failed and must be replaced. Call for same-day service to prevent flooding.
Where is it leaking?
- Top connections: often a loose or corroded fitting (repairable)
- T&P relief valve: pressure issue or bad valve (repairable)
- Drain valve: loose or worn (repairable)
- Bottom of the tank: internal corrosion (replace the unit)
Do this now, and when to call us
- Turn off the cold water supply valve to the heater.
- Turn off the power (breaker) for electric, or set gas to pilot/off.
- Place a bucket and clear items away from the unit.
- Note exactly where the water is coming from.
Call First Response for same-day water heater repair or replacement in San Antonio. A tank leaking from the bottom won't be fixed by tightening, it needs replacing before it bursts.
Frequently asked questions
Is a leaking water heater an emergency?
Yes. A small leak can become a burst tank and flood. Shut off the water and call us the same day.
Can a leaking water heater be repaired?
If the leak is at a valve or connection, usually yes. If the tank itself leaks from the bottom, it must be replaced.
How long does a replacement take?
Most standard replacements are done the same day.