Sometimes, we take for granted that our faucets give us hot water on demand. It’s something we hardly think twice about—until it stops working. If your shower is suddenly ice cold, don’t rush to call a plumber. In some cases, you can solve the problem in minutes at no cost with the push of a button. This guide breaks down why water heaters quit and how to reset them fast.
Angi Tip
Some DIY repairs are great for saving money and sharpening your skills, but leave larger jobs like water heater repair to the pros. An experienced hand can ensure the task is completed safely and will prevent further damage.
Understanding Why Your Water Heater Stopped Working
It’s important to understand water heater components when handling any sort of troubleshooting yourself. Many water heaters have a high-limit switch or reset button. This button is designed to trip when your water heater malfunctions, protecting your household from being burned by scalding water. The reset button may occasionally trip—usually during a power surge or thunderstorm—but sometimes at random. In these cases, you can reset it on your own.
However, a water heater that trips constantly may have more serious reasons for doing so. If your water heater fails weekly, daily, or even more frequently, it might be caused by the following:
Before you look at your water heater, check your electrical panel. You should be able to find a circuit breaker labeled for your water heater. If the breaker is in the "on" position, flip it off. This will cut off power to the unit and allow you to troubleshoot safely.
If the breaker for your water heater is already in the "off" position, flip it on and wait a few minutes. If it stays on, go to your water heater unit and listen for the sound of bubbling water. This is a sign that it's heating your water so you can take a warm shower again soon.
However, if the breaker trips again soon after you turn it on, you likely have an electrical issue and should call an electrician near you. If you can’t identify your water heater's breaker, flip all breakers off or contact an electrician to assist you.
For urgent water heater issues, you can also contact an emergency plumber to come by and handle the problem. Emergency plumbers cost between $60 and $600 per hour but can give you major peace of mind knowing your home is safe from dangerous water heater problems.
Inspect Your Water Heater
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Look around your water heater with a flashlight for signs of a leak or visibly damaged wiring. These are serious issues that you’ll want to have a pro address. If you don’t see any obvious problems, look for the hot water reset button. Most water heaters will have a reset button, though some gas water heaters require you to relight the pilot light.
This button may be near the unit’s thermostat, but most water heaters have a removable metal panel on the side that houses the button. Use a screwdriver to remove this panel.
If there is insulation behind the panel, check it for moisture. Damp insulation could be from a leak and is a sign of a leaking or failing water heater that you'll likely need to replace soon. Call a plumber near you, explain the issue, and get it solved promptly.
Push the Reset Button
If you don’t detect any issues with your water heater, remove the insulation to reveal the hot water reset button. Firmly press the button. It will usually click, but this can vary from unit to unit.
Restore Power
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Put the insulation back in place and screw the metal panel back in. Return to your electrical panel and flip the circuit breaker for the water heater back to the "on" position.
Check Hot Water Levels
Return to your water heater and listen for a bubbling noise, which indicates it's starting to heat your water. Run a sink faucet on hot to see if hot water comes out. Also, make sure the water is not too hot. If so, your water heater may have tripped due to an electrical issue or defective thermostat. You'll need to call a water heater specialist to resolve these problems.
If your water heater is working and hot water has been restored, you’ve successfully reset your water heater.
DIY vs. Hiring a Pro
Resetting a water heater is simple, quick, costs nothing, and requires very few tools. Unless you cannot turn off the power to your water heater, it’s a job you can safely do yourself.
However, if you attempt to reset your water heater and it either continues to shut off or refuses to work at all, you may have a bigger underlying issue. This isn’t always the case, however. If you haven’t conducted a routine water heater inspection or haven’t flushed your water heater in over a year, hard water buildup could cause your water heater to short circuit. Flushing your water heater costs around $160 on average and can prolong the life span of your unit.
If you’re on top of maintaining your water heater and still can’t successfully reset the water heater, call a water heater professional right away. You may need to pay the cost of water heater repairs, which is $600 on average, but that price is well worth your safety and the ability to run hot water in your home again.
Questions to Ask a Water Heater Pro
Sometimes, resetting your water heater doesn’t fix the problem. If you’ve tried to reset your water heater yourself only for it to continue to not work, then it’s time to call in a water heater specialist near you to get to the root cause of your water heater woes. Here are a handful of questions you can ask your water heater pro.
Should I replace or repair my water heater if resetting it doesn’t work?
How much would it cost to repair my water heater?
What experience do you have in repairing water heaters?
What should I do if I suspect an electrical issue is the cause of the problem?
Do water heater professionals repair electrical wiring?
Frequently Asked Questions
While you can reset a water heater immediately with the reset button, it takes longer for the water within to heat up again. The time it takes for a water heater to heat your home’s water can depend on the unit. A gas water heater can take as little as an hour to heat up, while an electric water heater may take closer to two hours.
When you press reset on a water heater, you interrupt the power flow to the unit. This is useful during a malfunction from a power surge or faulty thermostat. This button may trip on its own to prevent such malfunctions from overriding safe thermostat settings that protect your household from scalding water.
There are several signs that something is amiss with your water heater. You might notice insufficient hot water even after you reset it. You might also notice a leak or poor water pressure. These are signs that your water heater’s temperature and pressure relief valve or the pipes around the heater need attention or repair.
Often, the first issue you might encounter is a lack or loss of power—this could be caused by a tripped switch or a failed heating element. If your hot water is not producing enough power and its size is not the issue, you might need to replace one of its heating elements. A leaking water heater could be caused by tank erosion.
No. Homeowners insurance doesn’t cover water heater repair costs. Repair and replacement of major home appliances are typically covered by a home warranty policy. Alternatively, if your water heater is still covered by the manufacturer’s warranty, that policy will cover the repair cost. However, homeowners insurance, in most cases, does cover water damage restoration caused by a faulty water heater. But you should always check with your provider to be sure.
