Does Water Heater Flame Stay On?

If your water heater flame stays on, it could be a sign that your unit is not functioning properly. While a pilot light staying lit is normal, a continually burning flame could indicate a problem with the gas valve or thermostat. If you notice your water heater flame stay on, it’s important to call a professional to have the unit inspected.

Continuing to use a water heater with an issue could lead to further damage or even a gas leak.


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If you have a water heater with a pilot light, you may be wondering if the flame should stay on all the time. The answer is no – the flame should only be on when the water heater is in use. If the flame is on all the time, it can overheat and cause a fire.

What Causes Pilot Light to Go Out on Water Heater

One of the most common issues people have with their water heater is that their pilot light keeps going out. While this can be frustrating, it’s important to understand what causes this so you can fix the issue and prevent it from happening again. There are a few different reasons why your pilot light may go out, so we’ll explore each one below.

One reason your pilot light may go out is if there is a draft in the room where your water heater is located. This can happen if there are open windows or doors near the water heater, or if there is an exhaust fan that’s turned on. The draft can cause the flame to flicker and eventually go out.

To fix this issue, you’ll need to find and eliminate the source of the draft.

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Another reason your pilot light may go out is because of debris in the burner assembly. Over time, dirt and dust can build up on the burner elements and interfere with proper combustion.

When this happens, it’s usually because there isn’t enough oxygen getting to the flame, causing it to go out. To clean your burner assembly, simply remove it from the water heater and use a brush or compressed air to remove any debris. Finally, another common reason for a pilot light extinguishing itself is because the gas valve isn’t turned on all the way.

If you suspect this might be the case, simply turn off power to your water heater (gas or electric) and then turn on the gas valve until it stops clicking. Once everything is back on, relight your pilot light following manufacturer instructions – typically by pressing a reset button – and see if that solves the problem.

Does Water Heater Flame Stay On?


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Is a Water Heater Flame Always On?

No, a water heater flame is not always on. The flame is only on when the water heater is actively heating water. Once the desired water temperature is reached, the flame will turn off until more hot water is needed.

How Long Does Burner Stay on Water Heater?

On most water heaters, the burner will stay on until the water in the tank reaches the desired temperature. The length of time that the burner stays on will vary depending on the size of the tank, the amount of water being heated, and the initial temperature of the water.

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Is Gas Water Heater Always On?

No, gas water heaters are not always on. In fact, most gas water heaters have a pilot light that must be lit in order for the heater to function. However, once the pilot light is lit and the heater is turned on, it will cycle on and off as needed to maintain the water temperature.


If your water heater’s flame stays on after the heating cycle is finished, there are a few possible causes. The most common cause is that the pilot light has gone out. If this happens, you’ll need to relight the pilot light.

Other possible causes include a faulty gas valve or a problem with the thermocouple. In any case, it’s best to call a plumber to diagnose and fix the problem.


I am a mechanical engineer and love doing research on different home and outdoor heating options. When I am not working, I love spending time with my family and friends. I also enjoy blogging about my findings and helping others to find the best heating options for their needs.