Troubleshooting guide
Dryer Not Heating? 7 Causes for Electric and Gas Dryers
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Quick answer
A dryer that tumbles but doesn't heat usually has a tripped breaker leg (electric), a closed gas valve (gas), or a blown thermal fuse caused by a clogged vent. If those are fine, the heating element on an electric dryer or the igniter and valve coils on a gas dryer are the next suspects.
No heat is the most common dryer problem we see. The dryer may sound normal and tumble perfectly, but clothes come out cold and wet after an hour.
Electric and gas dryers share some causes, like the vent and the thermal fuse, but differ on the heat source. Check the free items first, and pay attention to the vent. A blocked vent is behind many failed heat parts.
Causes, from most to least likely
1.No-heat setting selected
Air Fluff, Air Dry, Wrinkle Release and some delicate cycles tumble with little or no heat. It's easy to leave one selected, especially in shared laundry rooms.
- Check it yourself
- Choose a regular timed dry on high heat and run it for 5 minutes. Then feel the clothes or the drum.
- The fix
- No repair needed.
2.Half-tripped breaker or gas supply off
Electric dryers use a double-pole 240V breaker. The motor runs on one leg, but the heating element needs both. If only one leg trips, the dryer tumbles but won't heat. On gas dryers, a closed supply valve gives the same symptom.
- Check it yourself
- Turn the dryer breaker fully off, then back on. On a gas dryer, make sure the yellow-handled valve behind the dryer is parallel to the pipe.
- The fix
- Resetting the breaker or opening the gas valve fixes it. A breaker that trips again needs an electrician.
3.Blown thermal fuse or thermal cutoff
Dryers have one-time safety fuses that blow when the dryer overheats. On many electric models, including most Samsung dryers, a blown thermal fuse cuts the heat while the drum keeps turning. Whirlpool-built electric dryers have a separate thermal cutoff on the heater housing that does the same. The usual reason either one blows is a clogged vent.
- Check it yourself
- Check that air blows strongly out of the outside vent hood while the dryer runs. Weak airflow means the vent needs cleaning before any new fuse goes in.
- The fix · typical $130 – $220
- The fuse or cutoff is replaced and the vent is checked. A new fuse without fixing airflow will blow again.
4.Burned-out heating element (electric)
The heating element is a coil of wire in a metal housing. Over time the coil breaks, sometimes because the dryer was running hot from poor airflow.
- Check it yourself
- You'd need a multimeter to test it. If the breaker and fuse are fine and the dryer still runs cold, the element is the likely culprit.
- The fix · typical $170 – $290
- The element is replaced and tested for heat.
5.Failed igniter or gas valve coils (gas)
A gas dryer lights the burner with a glowing igniter. Once the flame sensor confirms heat, the valve coils open the gas. If the igniter doesn't glow, it or the flame sensor has failed. If it glows and then goes out without lighting, the valve coils are often the problem.
- Check it yourself
- With the dryer running, look through the small burner window if your model has one. Note whether you see a glow and whether a flame appears.
- The fix · typical $170 – $300
- The igniter or coils are replaced, and the burner is checked for proper flame.
6.Faulty cycling or high-limit thermostat
The cycling thermostat turns heat on and off to keep the temperature steady. The high-limit thermostat shuts off heat if the dryer gets too hot. Either can fail open and stop the heat.
- Check it yourself
- Testing these means unplugging the dryer and checking continuity with a meter. Most owners leave it to us.
- The fix · typical $130 – $220
- The faulty thermostat is replaced, and we look for the overheating that may have caused it.
7.Control board or timer
On electronic dryers, a relay on the control board powers the heat circuit. On older dryers, the timer does. Either can fail.
- Check it yourself
- This is the last suspect, checked only after the fuses, thermostats and heat source test good.
- The fix · typical $250 – $480
- We confirm the control isn't sending power before quoting a replacement.
When to call a technician
Call us if the breaker and gas valve are fine and the dryer still won't heat, if the thermal fuse keeps blowing, or if you ever smell gas or burning. We repair electric and gas dryers across Clearwater, Dunedin, Largo and north Pinellas, and we'll check your airflow on every no-heat call.
45-day parts & labor warranty
Every repair carries a 45-day warranty on the parts we install and on our labor.
What the warranty covers →Common questions
Why is my dryer running but not heating?
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Check the cycle setting and the breaker first. On electric dryers, a blown thermal fuse or heating element is common. On gas dryers, it's usually the igniter or the gas valve coils.
Can a clogged vent stop a dryer from heating?
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Yes. Restricted airflow makes the dryer overheat, which blows the thermal fuse or opens a thermostat. Fixing the vent is part of the repair.
Is it safe to bypass a dryer thermal fuse?
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No. The fuse is a fire-safety device. Bypassing it removes protection against overheating.
How long does a dryer heating element last?
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It varies with use and airflow. A dryer with a clean vent and a clean lint screen is much easier on its element.
What should I do if my gas dryer smells like gas?
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Don't run it or touch electrical switches. Leave the house, then call your gas utility or 911 from outside. A faint smell the moment the burner lights can be normal, but a lingering smell is not.
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Last reviewed 2026-10-07 by Mako Appliance Repair, Clearwater FL.
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