Why does my dryer tumble normally but produce no heat?

This is the classic symptom of the thermal fuse having blown, most often triggered by a clogged vent restricting airflow. Clear the vent first, then check the fuse.

How often should I clean my dryer vent?

At least once a year for the full duct run, with the lint screen cleaned after every load. This is also a meaningful fire-safety measure, not just a performance one.

Can I reset a blown thermal fuse myself?

No. Thermal fuses are one-time safety devices and can't be reset. Once blown, they must be replaced, which is a straightforward DIY task with a multimeter and the correct replacement part.

Why does my electric dryer run but the heating element doesn't work?

Check for a partially tripped double-pole breaker first. Electric dryers need both sides of a 240V breaker, and losing just one side still powers the motor but not the heating element.

Is it safe to work on a gas dryer myself?

Basic checks like vent cleaning, the lint screen, and the breaker are safe on any dryer type. Anything involving the gas igniter, valve, or line is worth leaving to a technician given the fuel safety involved.

How do I know if it's the heating element or the thermostat?

This distinction generally requires testing both components directly, which is why it's a reasonable point to bring in a technician once the vent, breaker, and thermal fuse are all ruled out.

Why is vent cleaning also a fire-safety issue?

A clogged dryer vent isn't only the most common reason for lost heat. Lint is highly flammable, and restricted exhaust airflow is a leading cause of home dryer fires. Cleaning the full vent run at least once a year is worth doing as routine maintenance, independent of whether you're currently having a heating problem.

Why do electric and gas dryers fail differently?

Electric dryers rely entirely on a heating element and don't need any gas-related troubleshooting. Gas dryers use a heating element only to warm the ignition point briefly, with an igniter and gas valve doing the actual work of producing heat, which is why a gas dryer's no-heat causes and repairs look different from an electric one's past the shared causes like a clogged vent or blown fuse.

Recommendation · DIY if Experienced

Why Is My Dryer Running but Not Heating?

A dryer that tumbles normally but produces no heat almost always traces back to airflow or a safety fuse doing its job. Clean the vent first; it is the most common reason the thermal fuse trips.

DIY time: 5–45 min
Cost range: $0–350
Difficulty: Moderate
Risk: Moderate Risk

Before you start

Diagnose first, then act.

Dryers include a one-time thermal fuse that cuts heat if the system overheats, and a clogged vent is the single most common reason that fuse trips. Work through the causes below in order; fixing the vent first prevents a freshly replaced fuse from blowing again right away.

Gas dryer, vent and ladder safety

Pulling a gas dryer out can kink or damage the flexible gas connector. Shut off the gas, move it gently, and after pushing it back, brush soapy water on the connection. Bubbles mean a leak: shut off the gas. If you smell gas, leave and call the gas utility from outside. Use rigid or semi-rigid metal duct, never foil or vinyl, keep the outdoor hood flap clear, and use a stable ladder for exterior work.

Decision matrix

Every likely cause, with its own real cost and time, not one blended guess for the whole repair.

Decision matrix: cause, approach, cost, and time for Dryer Not Heating
Cause	Approach	Cost	Time
Clogged Vent or Lint Screen	DIY	$0–15	30–45 min
Partially Tripped Breaker	DIY	$0	5 min
Blown Thermal Fuse	DIY	$5–10	30–45 min
Failed Heating Element, Igniter, or Cycling Thermostat	Professional	$100–350	30–90 min

Causes

Tap a cause to open it. Only one stays open at a time, so it's easy to compare.

Most common

Clogged Vent or Lint Screen

DIY-Friendly

Root cause

Lint that escapes the lint screen builds up inside the exhaust duct over months and years of use. Once it's restricted enough, hot air can't escape efficiently, and heat builds up inside the dryer cabinet until the thermal fuse trips as a safety measure, leaving you with a dryer that tumbles but won't heat.

30-second check

Check the outdoor vent exit while the dryer runs. You should feel a strong, warm, consistent airflow. Weak or absent airflow points to a blockage somewhere in the duct.

Tools & materials

Vacuum with a hose attachment, a dryer vent brush kit (a few dollars, widely available).

Step-by-step

1 Unplug the dryer (or shut off gas for a gas dryer) before working on it.
2 Clean the lint screen thoroughly, including a wash with soap and water if it feels waxy from dryer sheet residue.
3 Disconnect the vent hose from the back of the dryer and vacuum out visible lint.
4 Use a vent brush kit to clear lint further down the duct run, working from both the dryer end and the exterior exit if possible.
5 Reconnect everything, restart the dryer, and recheck airflow at the outdoor vent.
6 Plan to clean the full vent run at least once a year going forward.

Time: 30–45 min · Cost: $0–15 · Skill level: Beginner

Common

Partially Tripped Breaker (Electric Dryers)

DIY-Friendly

Basic tools

Blown Thermal Fuse

DIY if Experienced

Root cause

The thermal fuse is a one-time safety device that permanently cuts power to the heating circuit once the dryer overheats. It can't reset itself and must be replaced once blown. It's most often triggered by the clogged vent covered in Cause 1, which is why fixing the vent first matters before replacing this part.

30-second check

With the vent already cleared, test the fuse (typically located on the blower housing or near the heating element) with a multimeter for continuity. No continuity confirms it's blown.

Tools & materials

Multimeter, replacement thermal fuse matching your dryer model ($5–10 for the part), screwdriver.

Step-by-step

1 Unplug the dryer and, if needed, remove the back or front panel per your model to access the fuse.
2 Locate the thermal fuse and test it with a multimeter set to continuity. No reading means it's blown.
3 Take a photo of the wiring before disconnecting the old fuse.
4 Install the replacement fuse matching your exact model, reconnecting wires the same way.
5 Reassemble, restore power, and run a cycle to confirm heat has returned. Only proceed with this once you've already cleared the vent, or the new fuse may blow again quickly.
6 Never bypass or jumper the thermal fuse. It is the safety device that stops a dryer overheating.

Time: 30–45 min · Cost: $5–10 for the part · Skill level: Intermediate

Not a DIY fix

Failed Heating Element (Electric), Igniter (Gas), or Cycling Thermostat

Hire a Professional

4 · FAQ

Frequently asked questions

Why does my dryer tumble normally but produce no heat?

This is the classic symptom of the thermal fuse having blown, most often triggered by a clogged vent restricting airflow. Clear the vent first, then check the fuse.
How often should I clean my dryer vent?

At least once a year for the full duct run, with the lint screen cleaned after every load. This is also a meaningful fire-safety measure, not just a performance one.
Can I reset a blown thermal fuse myself?

No. Thermal fuses are one-time safety devices and can't be reset. Once blown, they must be replaced, which is a straightforward DIY task with a multimeter and the correct replacement part.
Why does my electric dryer run but the heating element doesn't work?

Check for a partially tripped double-pole breaker first. Electric dryers need both sides of a 240V breaker, and losing just one side still powers the motor but not the heating element.
Is it safe to work on a gas dryer myself?

Basic checks like vent cleaning, the lint screen, and the breaker are safe on any dryer type. Anything involving the gas igniter, valve, or line is worth leaving to a technician given the fuel safety involved.
How do I know if it's the heating element or the thermostat?

This distinction generally requires testing both components directly, which is why it's a reasonable point to bring in a technician once the vent, breaker, and thermal fuse are all ruled out.
Why is vent cleaning also a fire-safety issue?

A clogged dryer vent isn't only the most common reason for lost heat. Lint is highly flammable, and restricted exhaust airflow is a leading cause of home dryer fires. Cleaning the full vent run at least once a year is worth doing as routine maintenance, independent of whether you're currently having a heating problem.
Why do electric and gas dryers fail differently?

Electric dryers rely entirely on a heating element and don't need any gas-related troubleshooting. Gas dryers use a heating element only to warm the ignition point briefly, with an igniter and gas valve doing the actual work of producing heat, which is why a gas dryer's no-heat causes and repairs look different from an electric one's past the shared causes like a clogged vent or blown fuse.

References

Still deciding

Two other questions worth answering

This guide covers whether you can do the job yourself. These cover the two questions that often come before and after it.

Repair it or replace it?

Whether this is worth fixing at all, based on age, repair cost, and how much life it has left.

What should this cost?

Parts pricing and labor rates for your state, so you can check a quote line by line.

Related guides

If this wasn't quite it

DIY if Experienced

Washing Machine Not Draining

5–20 min · $0–500

DIY if Experienced

Washing Machine Won't Spin or Agitate

5 min–1.25 hrs · $0–600

DIY if Experienced

Oven or Stove Burner Not Igniting

5 min–1 hr · $0–600

Keep exploring

Browse every Fix or Hire guide.

40 honest guides covering the home repairs people ask about most. Didn't find yours? Suggest one.

Browse all guides Suggest a guide

Before you start

Decision matrix

Causes

Root cause

30-second check

Tools & materials

Step-by-step

Root cause

30-second check

Tools & materials

Step-by-step

Root cause

30-second check

Tools & materials

Step-by-step

Root cause

30-second check

What a professional actually does

Frequently asked questions

References

Two other questions worth answering

If this wasn't quite it

Browse every Fix or Hire guide.