Why is my dryer not heating?
When a dryer runs but produces no heat, the most common culprits are a blown thermal fuse ($100 – $200 repaired), a failed heating element ($150 – $300), or a completely clogged exhaust vent — which is free to check yourself and is the root cause behind most fuse failures.
Gas and electric dryers fail differently: electric models almost always point to the element or fuse; gas dryers usually lose heat from a weak igniter or bad gas valve coils. Either way, a dryer that spins but doesn't heat is a targeted repair, not a replacement.
Most likely causes
| Cause | How to tell | The fix | Typical cost |
|---|---|---|---|
| Clogged exhaust duct | Drying times have gotten longer over months; laundry room feels humid during cycles; outside vent flap barely moves | Disconnect the duct at the back of the dryer and clean the full run — DIY or a $100–$170 vent cleaning service | $0 – $170 |
| Thermal fuse blown | No heat at all, often right after an unusually hot load or after duct was already restricted | Replace the fuse and clear the vent that caused the overheat — skipping the vent means the new fuse blows again | $100 – $200 |
| Heating element burned out (electric) | Drum spins normally, air flows, but not even faint warmth — from the very first moment of the cycle | Replace the element assembly — a common repair any tech knows quickly | $150 – $300 |
| Gas igniter or valve coils failed (gas) | Gas dryer clicks trying to light but no flame holds, or heat quits partway through the cycle | Replace the igniter or gas valve coil set — gas work should go to a pro | $150 – $300 |
| Cycling thermostat or high-limit thermostat bad | Heat is erratic — sometimes works, sometimes doesn't; loads come out half-damp | Replace the faulty thermostat; often found during a tech diagnostic | $125 – $250 |
Try this first (before you pay anyone)
- Pull the dryer away from the wall and disconnect the exhaust duct. Look inside — if you see packed lint, you found the root cause. Clear it and run a timed-dry cycle before calling anyone.
- Check the outside vent cap while the dryer is running. Weak or no airflow from the outside flap means the duct is blocked somewhere in the run.
- For electric dryers: check both breakers in your panel. Dryers use a double breaker (two poles). If one leg trips, the drum motor still runs but the heating element loses power — the dryer spins without heat.
- Make sure you're not in an Air Dry, Delicate, or Energy Saver mode — many dryers can run at very low or no heat on those settings and it's an easy miss.
Call a pro when…
- The exhaust duct is clear but there's still zero heat — element, fuse, and thermostat testing requires a multimeter and accessing internal panels
- It's a gas dryer and you smell anything — stop using it and call same-day
- The thermal fuse has blown more than once — something upstream (vent, thermostat, element) is still causing overheating
- The dryer trips the breaker when the heating cycle kicks in
Repair or replace?
Most dryers last 10–13 years. A thermal fuse or heating element repair on a dryer under 8 years old is almost always worth doing — you're spending $100–$300 to extend the life of a machine that costs $600–$1,200 new. Past 10 years, or if the repair quote exceeds half the cost of a comparable replacement (~$500–$900), put that money toward a new unit instead — that's the 50% rule, and a straightforward tech will tell you exactly which side you're on.
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Related questions
Why does my dryer run but not produce heat?
The drum motor and the heating circuit are completely separate systems. A failed thermal fuse, burned-out element, or clogged vent can knock out the heat while leaving the motor — and everything visible — running perfectly. That's why a no-heat dryer almost never needs full replacement.
How much does dryer repair cost when it won't heat?
Typically $100–$300 for parts and labor, depending on whether the issue is the thermal fuse, heating element, or thermostat. Most shops charge a $75–$150 diagnostic fee that gets credited toward the repair if you approve the work.
Can I fix a dryer that won't heat myself?
Cleaning the exhaust duct is a DIY job anyone can do — just disconnect the duct and clear it. Replacing a thermal fuse is moderate DIY if you're comfortable removing the back panel and using a multimeter. Heating element replacement is similar. If you'd rather not open the machine, it's a quick and inexpensive pro visit.
What's the difference between a thermal fuse and a heating element?
The thermal fuse is a one-time safety device — it blows permanently if the dryer overheats, cutting power to the heating circuit. The heating element is the coil that actually generates heat. A blown fuse means the dryer overheated; a failed element means the coil itself wore out. Both cause the same symptom (no heat) but are diagnosed with a multimeter.