A water heater problem needs immediate attention if you smell gas, see water leaking from the tank, hear the relief valve hissing or see it releasing water, or notice scorch marks, smoke, or sparks near the unit. Lukewarm water or a strange noise now and then is usually less urgent, but it still deserves a look soon.
A Gas Smell
If you smell rotten eggs near a gas water heater, do not touch light switches, appliances, or the heater controls. Leave the house right away and call your gas utility or 911 from outside. Do not go back in until you are told it is safe.
A Leaking Tank
Water pooling under the center of the tank usually means the tank has rusted through. That kind of leak does not get better and can turn into a much bigger flood. Close the cold-water valve above the heater if you can reach it safely, then switch off the gas control or the breaker.
The Relief Valve Is Working Hard
The temperature and pressure relief valve lets out water when the tank gets too hot or too pressurized. Hissing, steam, or a steady flow from its discharge pipe means something is wrong inside. Turn off the heat source and keep away from the pipe. Never cap or plug the valve.
Scorch marks near the burner, a burning smell, or sparks around an electric unit call for shutting off power at the breaker, if you can do it from a dry spot.
What Can Usually Wait a Few Days
- Water that is warm but not hot
- Popping or rumbling from sediment
- A slow drip from the drain valve
- Rusty hot water from only some taps
For urgent signs, a plumber should look at the heater before it is used again. For the milder ones, a weekday plumbing appointment is often enough. Call JPR Plumbing at (833) 603-1840.