Home / Blog / Gas dryer flame goes on and off
Gas Dryer Flame Goes On and Off: Normal or a Problem?
A gas dryer’s burner is supposed to cycle. Here is what normal looks like, what is not, and what usually causes a flame that lights and goes out.
Last reviewed October 11, 2026. Written and reviewed by the Plano Dryer Pros team. How we create content
A gas dryer’s burner is meant to cycle on and off to hold the temperature, so some on-and-off is normal. It is a problem when the flame lights briefly and shuts off over and over, or the clothes stay damp. The usual causes are a restricted vent, a weak flame sensor, or weak gas valve coils.
Key takeaways
- A burner that cycles to hold the temperature is normal.
- Many short bursts of flame with damp clothes is not normal.
- Check the vent first: a blocked vent is the most common cause.
- Flame sensors, coils and the igniter are near the gas connection, so leave them to a technician.
What normal looks like
A gas dryer does not burn continuously. The burner lights, heats the air, and shuts off when a thermostat senses the air is hot enough, then lights again when it cools. How often that happens depends on the load, the setting and the airflow. Cycling over a cycle is normal. The drum should keep getting hot, and the clothes should dry.
Is it normal for the flame in a gas dryer to go on and off?
Yes, to a point. The burner cycles to hold the temperature, so it lights and shuts off during a normal cycle. It is a problem if the flame lights for a few seconds and goes out repeatedly, the dryer is not getting hot, or the clothes stay damp.
When on and off is a problem
| What you notice | Likely cause | Next step |
|---|---|---|
| The flame lights for seconds, goes out, and repeats, with damp clothes | A weak flame sensor or weak gas valve coils | Have them tested together |
| The burner cycles very often and the dryer is very hot | A restricted vent tripping the high-limit thermostat | Run the vent test and clear the vent |
| The flame lights late, with a thump | Delayed ignition, which is a safety issue | Stop using it and call a technician |
| A yellow, sooty or uneven flame | Lint or rust in the burner, or restricted air | Stop and have it cleaned |
| The igniter glows and no flame follows | Weak coils or a weak igniter | How to test a gas dryer igniter |
Why does the flame in my gas dryer keep going out?
The usual causes are a restricted vent that makes the dryer overheat and shut the burner off, a weak flame sensor, or weak gas valve coils that cannot hold the valve open. Check the vent first. If the vent is clear, have the sensor, coils and igniter tested by a technician.
What to check first, safely
- If you smell gas at any point, leave the house and call 911 and Atmos Energy at 866.322.8667
- Clean the lint screen, then run the 10-minute vent test: vent safety guide
- Check the outside hood: the flap must open freely
- Do not take apart anything near the gas connection
- If the flame is yellow, sooty or lights late, stop using the dryer and call
Can a blocked vent make a gas dryer flame cycle on and off?
Yes. When airflow is restricted the dryer overheats, and the high-limit thermostat shuts the burner off, then lets it relight when it cools. That gives short, repeated bursts and long drying times. Clearing the vent often fixes it, and it also lowers the fire risk.
The parts involved
Three parts decide whether the flame lights and stays lit: the igniter, the gas valve coils and, on some models, a separate flame sensor, while many dryers rely on the igniter’s electrical current instead. A weak part can look fine and still fail under load. See the igniter and coils guide, the flame sensor and burner page, and the post on whether gas dryers have pilot lights.
What parts can make a gas dryer flame go out?
The igniter, the gas valve coils and, on some models, a flame sensor. A weak igniter glows but does not draw enough current for the coils to hold the valve open, so the flame goes out. A technician usually tests the igniter and the coils together, because they wear together.
What it costs, and when to call
A gas igniter or valve coil repair typically costs about $200 to $375 in Plano, parts and labor, and clearing a vent about $100 to $200. Call a technician if the vent is clear and the flame still goes out, if it lights late, or if you are not comfortable working near the gas connection. See the cost guide.
How much does it cost to fix a gas dryer flame that keeps going out?
A gas igniter or valve coil repair typically costs about $200 to $375 in the Plano area, parts and labor, and clearing a vent about $100 to $200. These are estimates, not a quote. You get the exact price in writing before any work starts.
Sources
- Atmos Energy gas emergency guidance (866.322.8667)
- Your dryer’s installation and service manual, which governs over any general guidance on this page
- Plano Dryer Pros estimates of typical local repair pricing. See our Editorial Policy.
Frequently asked questions
Is a yellow flame in a gas dryer dangerous?
A mostly blue flame is normal. A yellow, sooty or uneven flame can mean lint, rust or restricted air, and it can mean incomplete combustion. Stop using the dryer and have it checked.
Why does my gas dryer light and then go out in a few seconds?
The usual causes are a weak flame sensor or weak gas valve coils that cannot hold the valve open, or a very restricted vent. Check the vent, then have the parts tested.
Can I clean a gas dryer burner myself?
Not safely if you are not trained. The burner sits next to the gas connection, so with the dryer unplugged and the gas valve closed, many people still leave it to a technician.
What should I do if I smell gas?
Leave the house, avoid switches, and from a safe distance call 911 and Atmos Energy at 866.322.8667. Do not use the dryer again until it has been checked.
Get your dryer working again
Call and a person will answer, or request a repair online. You get the full price in writing before any work starts.