A broken water heater usually comes down to one of a few causes: a tripped breaker, a pilot light that went out, a thermostat set too low, sediment in the tank, or a failed heating element. You can check most of these yourself with basic tools. If none of the fixes below work, Benjamin Franklin Plumbing of Duncanville serves Cedar Hill homeowners with fast, upfront-priced water heater repair.
Key Points
- Start with the power: a tripped breaker is one of the most common reasons an electric water heater stops heating.
- On a gas water heater, confirm the gas valve is open and the pilot light is lit.
- A thermostat set too low leaves you short on hot water; too high risks scalding.
- Flushing the tank removes sediment that cuts efficiency and shortens the heater’s life.
- Leaks, corrosion, a breaker that keeps tripping, or a gas smell mean it’s time to call a professional.
Why Did My Water Heater Stop Working?
A broken water heater usually stops working because it lost power or fuel, the thermostat is set wrong, or a part inside the tank has failed. Electric units most often trace back to a tripped breaker or a burned-out heating element. Gas units most often trace back to a pilot light, thermocouple, or gas supply issue. Work through the seven checks below in order, from simplest to most involved.
1. Check the Power Supply and Circuit Breaker
A broken water heater that runs on electricity may simply have lost power. Check the circuit breaker first, since a surge can trip it.
- Open your home’s electrical panel and find the breaker labeled for the water heater.
- If it’s in the “off” position or looks tripped, flip it back to “on.”
- Look at the power cord or wiring for visible damage or loose connections.
If the breaker trips again, there may be a short circuit or an overloaded circuit. Stop there and call a professional, because repeated tripping points to an electrical fault that isn’t safe to troubleshoot yourself. For urgent problems, our emergency plumbing team is available 24/7.
2. Confirm the Gas Valve and Pilot Light
A gas water heater that won’t heat often has a closed gas valve or a pilot light that went out. Confirm the gas valve is fully open, then check that the pilot light is lit. Follow the relighting instructions on the unit’s label if it’s out.
If the pilot light won’t stay lit, the thermocouple is usually the cause. If you smell gas at any point, leave the house and call for help right away.
3. Inspect the Thermostat Settings
After you confirm the water heater has power, check the thermostat. It’s usually near the bottom or side of the unit. If your water heater has two thermostats, inspect both.
Set the temperature between 120°F and 140°F. Too low, and you won’t get enough hot water; too high, and you risk scalding. After adjusting, give the unit a couple of hours to respond.
If a broken water heater still won’t heat after the adjustment, the thermostat itself may be faulty. A professional water heater repair service can test and replace it.
4. Flush the Water Heater Tank
Flushing the tank removes sediment that builds up over time and hurts efficiency and performance. Here’s how:
- Turn off the power or gas supply to the heater.
- Connect a garden hose to the drain valve at the bottom of the tank and run it to a safe drainage area.
- Open the drain valve and let the water flow. It will look cloudy at first, which is normal.
- Open a hot water faucet in your home to let air into the system and speed up draining.
- Let the water run until it clears, then close the drain valve and remove the hose.
- Refill the tank completely before restoring power or gas.
Regular flushing extends the life of your water heater and improves overall performance. Water heating is typically the second largest energy expense in a home, according to the U.S. Department of Energy, so a clean, efficient tank pays off every month.
5. Look for Leaks and Corrosion
Leaks and corrosion are signs of a broken water heater that won’t fix itself. Check the area around the heater for pooling water or dampness, and examine the connected pipes, since they can leak too.
Next, look for rust, discoloration, or flaking on the tank and fittings. Corrosion means the metal is compromised and can lead to a tank failure. If you find a leak or significant corrosion, call a professional to assess it before it causes more extensive damage.
6. Test the Heating Elements
On electric models, a failed heating element is one of the most common causes of a broken water heater and lukewarm or no hot water. Test the elements safely:
- Turn off the power to the water heater at the breaker.
- Remove the access panels to expose the heating elements.
- Look for burn marks, corrosion, or loose or damaged wires.
- Use a multimeter to test each element for continuity. No continuity means the element has failed and needs replacement.
- Tighten any loose wiring connections and replace faulty components.
Working with electricity is dangerous. If you’re unsure about any step, stop and call a professional.
7. Call a Professional for Major Repairs
Major water heater repairs are safer in professional hands. Leave the job to a licensed plumber when you’re facing:
- Risk of Injury: Heavy equipment, gas lines, and electrical components are dangerous without proper training.
- Potential Leaks: Improper repairs can lead to water damage and mold growth.
- Code Violations: Unlicensed repairs may not meet local building codes, which causes future issues.
- Warranty Concerns: DIY fixes can void your warranty.
A skilled technician from Benjamin Franklin Plumbing of Duncanville can diagnose your broken water heater accurately and repair it safely. You get upfront pricing with no surprise costs, backed by our satisfaction guarantee.
Repair or Replace Your Broken Water Heater?
A broken water heater is worth repairing when the problem is a single part, such as a thermostat, element, or thermocouple, and the tank itself is sound. Replacement usually makes more sense when:
- The tank is leaking from the body or shows heavy rust.
- The unit needs repeated repairs.
- Sediment has hardened and flushing no longer helps.
- Your household regularly runs out of hot water.
If it’s time for a new unit, our team handles water heater replacement and tankless water heater installation for continuous hot water.
Get Your Hot Water Back in Cedar Hill, TX
Tried all seven fixes and still have a broken water heater? Benjamin Franklin Plumbing of Duncanville serves Cedar Hill, TX homeowners with on-time service, and if there’s any delay, it’s you we pay. Schedule your appointment today and get your hot water running again.
