Short answer: Possible causes for a gas dryer not heating include a faulty thermal fuse, igniter, gas valve solenoid coils, or a clogged vent. Professional diagnosis may be needed for accurate repair.

Facing the issue of a gas dryer not heating can be both frustrating and inconvenient, especially when you rely on it for efficient laundry drying. The ability of a gas dryer to produce heat is crucial for its proper functioning, and when it fails to do so, it can disrupt your daily routine. In this discussion, I will explore the common reasons why a gas dryer may stop heating and provide valuable insights and solutions to help diagnose and address this issue effectively, ensuring your appliance operates efficiently once again. Whether you’re experiencing this problem for the first time or seeking ways to prevent it in the future, understanding the underlying causes and solutions is essential to keep your gas dryer running smoothly.

Reasons For Gas Dryer Not Heating

Inspecting the thermal fuse
Checking thermal fuse with a multimeter

Thermal Fuse Issue:

The thermal fuse in a gas dryer serves as a safety device to prevent overheating. If the temperature inside the dryer becomes too high, the thermal fuse will blow, cutting off power to the heating element. This can occur due to restricted airflow, and it’s a common cause of heating problems in gas dryers.

Faulty Igniter:

The igniter in a gas dryer plays a critical role in igniting the gas to create heat. If the igniter is damaged, broken, or fails to function correctly, it can prevent the gas from igniting, leading to a lack of heat. A damaged igniter can be a key reason for heating issues in gas dryers.

Gas Valve Solenoid Coils:

Gas valve solenoid coils are responsible for opening the gas valve to allow gas to flow into the burner assembly. When these coils fail, they can disrupt the gas supply, resulting in the dryer not heating properly. This issue may manifest as the igniter glowing but failing to establish a flame.

Radiant Flame Sensor:

The radiant flame sensor in a gas dryer is designed to detect heat emitted by the flame. If the sensor malfunctions or its contacts fail, it can lead to problems with the gas valve opening at the right time. This can cause the dryer to not heat as expected.

Gas Valve Issue:

The gas valve controls the flow of gas into the burner assembly. If the gas valve becomes stuck in an open or closed position, it can impact the heating process. A malfunctioning gas valve can result in gas either leaking out or not reaching the burner, leading to heating problems in the gas dryer.

How To Fix Gas Dryer Not Heating?

Check the Thermal Fuse

Step 1: Unplug the dryer from the power source.

Step 2: Locate the thermal fuse, usually on the blower housing.

Step 3: Use a multimeter to check for continuity in the thermal fuse.

Step 4: If there’s no continuity, the thermal fuse has blown and needs to be replaced.

Step 5: Check and clean the dryer vent to ensure proper airflow.

Inspect the Gas Valve Solenoid Coils

Checking gas leakage on gas dryer
Inspecting gas valve leakage

Step 1: Make sure the dryer is unplugged.

Step 2: Confirm if the igniter glows but doesn’t establish a flame.

Step 3: If the igniter turns off without a flame, the gas valve solenoid coils may be faulty.

Step 4: Test the solenoid coils with a multimeter for continuity.

Step 5: If they don’t have continuity, replace the faulty solenoid coils.

Test the Igniter

Step 1: Unplug the dryer.

Step 2: Check if the igniter is glowing when the dryer is in use.

Step 3: If it doesn’t glow, the igniter may be defective.

Step 4: Test the igniter with a multimeter for continuity.

Step 5: If it has continuity, the igniter is likely not the issue.

Check the Flame Sensor

  • Ensure the dryer is disconnected from power.
  • Locate and test the flame sensor for continuity at room temperature.
  • If there’s no continuity, the flame sensor is likely faulty.

Examine the Thermostats

Step 1: Unplug the dryer.

Step 2: Find the high-limit thermostat on the burner assembly and the cycling thermostat on the blower housing.

Step 3: Test both thermostats for continuity using a multimeter.

Step 4: If either thermostat lacks continuity, it may be causing the problem.

Additional Troubleshooting

Prevention Tips

To prevent a gas dryer from not heating, follow these maintenance and safety tips:

Regularly Clean the Lint Screen: After each drying cycle, clean the lint screen to remove lint and debris. A clogged lint screen can restrict airflow, causing the dryer to overheat and potentially lead to heating issues.

Inspect and Clean the Dryer Vent: Ensure that the dryer vent (the duct leading from the back of the dryer to the outside of your home) is clear of lint and debris. Lint buildup in the vent can obstruct airflow, making it harder for the dryer to heat efficiently. Clean the vent at least once a year or more often if needed.

Upgrade to Rigid Metal Ducting: If your dryer has a flexible foil or plastic vent duct, consider upgrading to rigid metal ducting. Metal ducts are less likely to trap lint and are more resistant to crushing or damage, ensuring better airflow.

Check the Installation: Verify that the dryer is installed properly and vented to the outside according to the manufacturer’s instructions. Incorrect installation can lead to ventilation problems and affect heating performance.

Maintain Proper Clearance: Ensure that the area around the dryer is free of obstructions and that there is enough space for proper ventilation. Avoid storing items on top of or around the dryer that can block airflow.

Inspect the Gas Supply: Periodically check the gas supply line and connections to ensure there are no leaks or damage. If you notice any issues with the gas supply, consult a professional technician for repairs.

Perform Regular Dryer Cleaning: Clean the interior of the dryer, including the blower housing and exhaust duct, to remove accumulated lint and debris. This helps maintain efficient airflow and prevents overheating.

Professional Maintenance: Consider scheduling professional maintenance for your gas dryer. Technicians can inspect and service critical components, ensuring the appliance operates safely and efficiently.

Install a Carbon Monoxide Detector: Gas dryers produce combustion gases, so it’s essential to have a carbon monoxide detector installed in your home. This device can alert you to any potential gas leaks or safety issues.

Follow Manufacturer’s Recommendations: Always follow the manufacturer’s guidelines for maintenance, use, and safety. Refer to the dryer’s user manual for specific instructions on care and maintenance.

Checking dryer burner
Checking gas dryer burner


Why is my gas dryer taking longer to dry clothes than it used to?

There could be several reasons for this, including a clogged vent, a malfunctioning thermostat, or worn-out heating elements. Start by checking for lint buildup in the vent and ensure proper airflow.

Is it normal for my gas dryer to produce a burning smell during the first few uses?

Yes, it’s normal for a new gas dryer to emit a slight burning odor during the initial use. This odor is often due to the curing of paint and insulation materials used in the manufacturing process. It should dissipate after a few cycles.

Can I use my gas dryer with a propane (LP) gas supply instead of natural gas?

Yes, many gas dryers come with the option to convert between natural gas and propane. However, this conversion should be performed by a qualified technician to ensure safety and proper functioning.

What should I do if I suspect a gas leak from my dryer?

If you suspect a gas leak, turn off the gas supply to the dryer immediately. Do not operate any electrical switches or use open flames, and ventilate the area. Contact your gas provider and a professional technician to inspect and repair the issue.

Why does my gas dryer make a loud noise during operation?

Unusual noises in a gas dryer can result from worn or damaged parts such as rollers, bearings, or belts. These components may need inspection and replacement by a technician to eliminate the noise.

Should I leave the gas dryer door open when not in use?

Leaving the door open when the dryer is not in use can help reduce the buildup of moisture and odors inside the drum. However, it’s essential to ensure that children or pets cannot access the open dryer.


When facing the issue of a gas dryer not heating, it’s important to consider various factors such as the condition of the thermal fuse, igniter, gas valve solenoid coils, radiant flame sensor, and gas valve itself. Proper maintenance, including regular cleaning of the lint screen and vent system, plays a crucial role in preventing heating problems. Additionally, if troubleshooting or maintenance tasks seem daunting or if there are safety concerns, seeking professional assistance from a qualified technician is advisable to diagnose and resolve the specific issue effectively and safely, ensuring the continued efficient operation of the gas dryer.

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