Electric water heaters do not have pilot lights
Electric water heaters use heating elements instead of pilot lights. A heating element is a metal coil or rod that heats water directly when electricity flows through it. There is no flame, no gas, and no pilot light to ignite. When you turn on the thermostat, electricity powers the element, it gets hot, and it warms the water in the tank. When the water reaches the set temperature, the element shuts off automatically.
This is one of the main differences between electric and gas water heaters. Gas models use a pilot light—a small flame that stays lit all the time—to ignite the main burner when heat is needed. Electric models skip this step entirely because they generate heat through electrical resistance, not combustion.
Key Takeaways
- Electric water heaters have heating elements, not pilot lights, because they warm water using electricity instead of gas.
- The heating element is a metal coil or rod that turns on and off based on the thermostat setting, with no flame involved.
- You do not need to relight anything if the power goes out—the element will resume heating once electricity returns.
- Electric water heaters are simpler to maintain than gas models because there is no pilot light to monitor or relight.
How the heating element works
The heating element sits inside the water tank, usually near the bottom. When the thermostat senses the water temperature has dropped below the set point, it sends a signal to turn on the element. Electricity flows through the metal coil or rod, and resistance causes it to heat up to a very high temperature—often over 2,000 degrees Fahrenheit internally. Water surrounding the element absorbs this heat and warms up.
Once the water reaches the target temperature (typically 120 degrees Fahrenheit in most homes), the thermostat cuts power to the element. The element cools down, and the cycle waits until the water cools again. Most electric water heaters have two heating elements—one near the top and one near the bottom—so they can heat water faster and more evenly than a single element could.
Why electric water heaters are simpler than gas models
Because electric water heaters have no pilot light, you never have to worry about it going out. If the power goes out, the element straightforward stops heating. When power returns, heating resumes on its own—no relighting needed. This makes electric models more reliable in that sense and removes a common maintenance task.
Gas water heaters, by contrast, require you to relight the pilot if it blows out from a draft, a power surge, or age. You have to locate the pilot light access, find the ignition button, and hold it while the pilot reignites. If the pilot keeps going out, you may need to call a technician. Electric models eliminate this problem entirely.
What to check if your electric water heater stops heating
If your electric water heater is not producing hot water, the issue is not a pilot light—it is something else. Start by checking whether the circuit breaker for the water heater has tripped. Look at your home's electrical panel and flip the breaker all the way off, then back on. If it trips again when ready, there is an electrical fault and you should call a licensed electrician.
If the breaker stays on but you still have no hot water, the heating element itself may have failed. Heating elements wear out over time and eventually stop working. Replacing one is a job for a plumber or water heater technician because it requires draining the tank and working with high-voltage electricity. Do not attempt this yourself.
The thermostat controls temperature, not a pilot light
On an electric water heater, the thermostat is the dial or digital display you use to set the temperature. It monitors the water temperature inside the tank and tells the heating element when to turn on and off. Most thermostats are set between 110 and 140 degrees Fahrenheit. The higher the setting, the more energy the heater uses and the longer the element runs.
If your water is not hot enough, you can turn the thermostat dial up slightly. If it is too hot, turn it down. This is the only adjustment most homeowners ever need to make. Unlike gas models, there is no pilot light flame to adjust or worry about.
Maintenance differences between electric and gas water heaters
Electric water heaters require less regular maintenance than gas models because there is no combustion, no venting, and no pilot light. You should still flush the tank once a year to remove sediment buildup, which happens in both electric and gas heaters. You should also check the temperature and pressure relief valve annually to make sure it works.
Gas water heaters need additional maintenance: checking the pilot light, inspecting the venting system for blockages, and ensuring the burner is clean. Because electric models skip all of this, they are generally easier to own and maintain over their lifetime.
Frequently Asked Questions
Can I relight an electric water heater if it stops working?
No. Electric water heaters have no pilot light to relight. If the heater stops producing hot water, the problem is a tripped breaker, a failed heating element, or a thermostat issue. Check the breaker first; if that does not fix it, call a plumber or electrician.
Do electric water heaters need a gas line?
No. Electric water heaters run entirely on electricity and need only an electrical circuit and a water supply line. They do not connect to a gas line at all, which is why they have no pilot light or burner.
Why is my electric water heater taking longer to heat water than before?
Sediment buildup inside the tank can insulate the heating element and slow heat transfer. Flush the tank by draining a few gallons from the drain valve at the bottom. If flushing does not help, the heating element may be failing and should be replaced by a technician.
Is an electric water heater safer than a gas one because there is no flame?
Electric heaters eliminate the risk of gas leaks and pilot light issues, but they still carry electrical hazards. Both types are safe when installed and maintained correctly. Gas models need proper venting; electric models need proper grounding and circuit protection.