What to Do When Your Water Heater Stops Working Suddenly

First, look for immediate hazards

Stay away from standing hot water and electrical equipment. If you smell gas, leave the area and contact the gas utility or emergency services from a safe location. Do not relight or operate equipment when a gas leak is suspected.

If the tank is actively leaking

If it is safe and you know how, close the cold-water supply to the heater and shut off its energy source. Protect belongings without entering unsafe water. A tank-body leak generally requires replacement.

If there is no hot water but no leak

Check whether other gas or electrical equipment is operating, note any error code, and avoid repeated resets. A tripped control can indicate a condition that deserves diagnosis.

Prepare for the service call

Have your five-digit ZIP code, fuel type, approximate tank age, capacity, location, and a description of leaking or error indicators ready. Photos of the full heater and its connections can help clarify the situation.

Start with safety

If you smell gas, don't operate switches or try to relight anything. Leave the home and call the gas utility or emergency services from outside. If water is pooling around the heater, close the cold-water supply valve above the tank. Then turn the gas control to off, or switch off the breaker for an electric heater, to limit damage while you arrange service.

Common causes for gas water heaters

Gas tanks that suddenly stop heating often have an ignition or safety-control issue rather than a failed tank.

• The pilot has gone out, or a thermocouple or flame sensor isn't detecting the flame.
• The gas supply to the home was interrupted or the heater's gas valve was turned off.
• A flammable-vapor sensor or thermal switch has tripped and needs evaluation.
• Venting problems triggered a safety shutdown on a power-vent model.

Common causes for electric water heaters

Electric tanks have their own common failure points, most involving power or heating elements.

• A tripped breaker, which should not be reset repeatedly if it trips again.
• A tripped high-limit reset switch behind the access panel.
• A failed upper or lower heating element or thermostat.
• Loose or damaged wiring connections, which require a qualified professional.

When a repair isn't the best value

A fairly new heater with a single failed part is often worth repairing. An older tank, especially one past 10 years, may not be. If a heater is leaking from the tank body, showing heavy corrosion, or has needed several repairs recently, putting money into another part can simply delay the inevitable. Replacing it on your own schedule is usually easier than waiting for a leak.

Information to have ready when you call

A technician can give better guidance if you can describe the heater and what happened. Photos of the rating plate and the area around the tank are especially helpful.

• Gas or electric, and approximate tank age
• Any water on the floor, and where it appears to come from
• Whether you've lost all hot water or only some
• Any unusual sounds, smells, or error lights
• Your five-digit ZIP code for availability

Getting back to reliable hot water

A sudden failure doesn't have to become a rushed decision. Once the heater is safely shut off, you have time to understand the options. If replacement makes sense, compare fuel type, capacity, and whether a like-for-like tank or a tankless system suits your household.

Residential replacement service is available across West Valley City and nearby Salt Lake Valley communities, with 24/7 availability checks.

What not to do during a sudden outage

It's tempting to try quick fixes, but some actions can make the situation worse or unsafe. Avoid repeatedly relighting a pilot that keeps going out, since that can signal a safety control or venting problem. Don't keep resetting a breaker or high-limit switch that trips again, because that points to an electrical or thermostat fault. Never cap or plug a dripping temperature and pressure relief valve. It's a critical safety device, and discharge means it's reacting to something that needs attention.

It's also best not to drain a hot tank yourself if you aren't familiar with the process, since the water can scald and old drain valves sometimes break or won't close again. Instead, shut off the water supply and the fuel or power, protect nearby belongings from water, and call for help. These simple steps keep the home safe while a technician diagnoses whether repair or replacement is the right next step.