Dryer not heating: check the vent before the parts
A dryer not heating is a heat-circuit fault in a machine whose motor still works, and the vent you should be clearing once a year is the usual cause. A blown thermal fuse is the symptom of that, not the fault itself.
A dryer runs but no heat is a heat-circuit failure in a machine whose motor still works: supply, venting, or one of three heat components. A tumble dryer that doesn’t heat leaves soaking-wet clothes. The CPSC identifies lint as the leading contributor to dryer fires, the same blockage that produces this symptom.
The lint hazard behind this symptom
Why is a no-heat dryer a safety issue?
Because the usual cause is restricted airflow, and restricted airflow is what overheats a dryer. The thermal fuse that blew did its job. Replacing it without clearing the vent removes the protection and leaves the hazard.
That reframes the whole repair. The vent is not a maintenance afterthought here, it is the first suspect and the actual fix in a large share of cases.
Put bluntly: a dryer not heating is usually an airflow story with an electrical symptom.
The order that works
Four checks before you open the back panel
01
Flip the double breaker fully
An electric dryer needs both 240 volt legs to heat. One tripped leg leaves the drum turning on 120 volts with no heat. Switch it right off, then back on.
02
Clear the vent, not just the screen
Pull the machine out, disconnect the flexible duct and clear it end to end. Check the exterior flap actually opens when the dryer runs.
03
Check the settings
Air fluff and similar no-heat cycles produce exactly this complaint, as does a sensor cycle with a load that never registers as wet.
04
Then test the heat circuit
Thermal fuse, cycling thermostat and heating element, in that order, with the machine unplugged and a multimeter set to continuity.
Cited source7:21
“The thermal fuse - in my experience this is [the most common no-heat failure on a] dryer. It's a fail-safe device.”
Bracketed text reconstructs a passage the captions garbled; the speaker’s own words are outside the brackets.
B
Ben
Working appliance repair technician
Bens Appliances and Junk, 2020
An independent source we cite. Not affiliated with Emergency Services 24H, and not a network contractor.
This explains the exact symptom better than any part does, and it costs nothing to rule out.
An electric dryer runs its motor on 120 volts and its element on 240, as two legs through a double breaker. When one leg trips the drum still turns and the element cannot fire.
Flip the breaker fully off and then back on. A half-tripped leg frequently looks closed at a glance.
Ben, the appliance technician behind Ben’s Appliances, tests the electricity before any part: each leg to neutral should read about 120 volts, leg to leg 240. A dryer that tumbles but never heats on a half-dead supply is a breaker problem.
Dryer not heating? Clear the vent, not just the screen
Cleaning the lint screen is not clearing the vent, and the distinction matters.
Pull the machine out, disconnect the flexible duct, and clear it end to end with the wall port. Then check the exterior flap opens: one held shut by lint restricts as badly as a blocked duct.
Duct material: rigid metal beats flexible foil on airflow, lint retention and fire resistance.
Run length: long runs with multiple bends need clearing more often.
Exterior flap: should open visibly when the dryer runs and close when it stops.
Behind the machine: a crushed duct where the dryer was pushed back is extremely common.
The thermal fuse is a symptom, not a cause
The thermal fuse is a one-time safety device that opens permanently when the machine gets too hot.
It does not wear out or fail randomly. It blows because something overheated the dryer, nearly always restricted airflow.
Ben, an appliance technician who works this circuit on camera, calls it the most common no-heat failure he meets, and is emphatic about the cause: lint in the blower housing or vent pipe overheated the machine. Replacing the fuse without clearing the vent, in his words, blows the next one.
He works the rest as a five-link chain: supply voltage, thermal fuse, thermistor, heating element, cycling thermostat, and last the timer. On the machines he demonstrates a healthy element measured around 10 ohms, one platform’s figure rather than a universal specification.
Two habits worth borrowing: photograph every connector before pulling it, and pull one spade connector before testing.
Never bypass a thermal fuse
Jumping across a thermal fuse to get a dryer working is advice that circulates online and it removes the protection that stopped the machine overheating. The fuse is the last line between a restricted vent and a fire. Clear the vent, replace the fuse, and never bridge it.
Heating element, thermostat and cycling switch
Test these once power and airflow are ruled out, with the machine unplugged and a multimeter.
Open heating elements show no continuity; a failed cycling thermostat gives intermittent heat. A dryer heating element is cheap relative to the labor of reaching it.
Gas dryers are a different machine
Does a gas dryer fail the same way?
No. It has no heating element. Heat comes from a burner lit by an igniter and controlled by gas valve coils and a flame sensor, so the failure list is entirely different and most of it is licensed work.
The vent logic still applies: a blocked vent overheats a gas dryer and trips its safety devices too.
The USFA attributes thousands of home fires a year to dryers, and failure to clean them is the leading cause. A blocked vent is a fire risk, not an efficiency issue.
What this repair costs, and when to replace
Indicative US ranges. Always get a written quote.
Job
Typical range
Notes
Vent and duct clearing
no part cost
Often the whole fix, and a safety task regardless
Thermal fuse
low-cost part
Replace only after clearing the vent
Cycling thermostat
low-cost part
Intermittent heat is the usual signature
Heating element, electric dryer
moderate part plus labor
Labor is the larger share of the bill
Igniter or gas valve coils, gas dryer
technician work
Burner assembly work is licensed work
Source: Fixr 2026 appliance repair cost data, with part-level costs stated qualitatively where no published figure exists (retrieved August 2026). Figures vary by region and timing.
Figures last checked
The first row is free and is often the whole repair. The rest are cheap parts attached to a labor charge, which is why the 50 percent rule (per our repair-or-replace guide) favors repair under ten years old.
Drawn from real public forum threads and reported prices, summarized and attributed as patterns.
These are not reviews of this site, and no names or ratings have been invented.
“Dryer works but does not heat. Do I have a bad plug or...”
SourceThread title, r/appliancerepair, ranking above every manufacturer page for this query. The first answers point at the 240 volt supply and the breaker rather than at any part.
“Why is my dryer not heating up, and should I call a home...”
SourceThread title from a community Q and A on this SERP. The recurring advice is to clear the vent before buying a thermal fuse, because the fuse blew for a reason.
“CPSC identifies lint accumulation in the screen and vent as the predominant contributor to clothes dryer fires”
SourceU.S. Consumer Product Safety Commission guidance on overheated clothes dryers: the same blockage produces the no-heat symptom.
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A clogged vent is both the most common reason a dryer isn’t heating and the documented cause of dryer fires. A blocked moisture sensor reads damp clothes as dry and shortens the cycle.
How the matching works, and what we do not do
Emergency Services 24H is a referral service. We do not employ technicians, clean vents or sell parts.
Your request routes to licensed, insured technicians covering your area, and they contact you directly. Vent cleaning is often a separate trade and worth asking about when you book.
Know the line
Safe to check yourself, or call a pro now
Safe to check yourself
Resetting both legs of the double breaker
Clearing the lint screen, duct and exterior flap
Checking the cycle setting and load size
Replacing flexible foil duct with rigid metal
Continuity testing with the machine unplugged, if you are confident
Call a pro now
Any gas dryer burner, igniter or valve work
A dryer that keeps blowing thermal fuses
Heating element replacement if you are unsure
240 volt supply or cord and outlet faults
Any smell of burning from the machine
24/7 dispatch network
Get a licensed appliance repair technician moving on this
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Fire, a gas smell, or an injury? Leave the building and call 911 first, then your gas
utility or power company. Use this form once you are safe.
Straight answers
Frequently asked questions
The questions homeowners actually search for on this problem, answered in plain language.
Why is my tumble dryer not getting hot but still tumbling?
The drum turns on 120 volts and the element needs 240, so one tripped breaker leg leaves a machine that runs and dries nothing.
Can a clogged vent stop a dryer heating altogether?
Yes, and it is the most common cause. Restricted airflow overheats the machine and the thermal fuse blows to stop it, so clear the duct end to end and check the exterior flap opens.
Why is my dryer running but not heating?
The motor circuit works and the heat circuit does not: a tripped breaker leg, a blocked vent, or a failed fuse, thermostat or element. On gas, the igniter or valve coils.
How do I reset a dryer that will not heat?
Flip the double breaker fully off and back on, because a half-tripped leg looks closed. If heat returns and goes again, the cause is still there and it is usually the vent.
Will replacing the thermal fuse fix it?
It restores heat and does not fix the cause. A thermal fuse blows on overheating, which is almost always restricted airflow, so clear the vent at the same time.
How often should a dryer vent be cleaned?
At least annually, and more often with a long duct run or a shedding pet. The CPSC identifies lint as the leading contributor to dryer fires, so this is a safety task.
Is it worth replacing a heating element?
Usually yes under ten years old: the part is cheap relative to a new dryer and the labor is the larger share. Older than that, apply the 50 percent rule (per our repair-or-replace guide).
My gas dryer will not heat. Is it the same fix?
No. A gas dryer has no heating element; the usual causes are the igniter, the flame sensor or the valve coils. If you smell gas, leave and call the utility from outside.
The lint path beyond the screen
Heating element and thermal fuse
A blown thermal fuse is usually a symptom of restricted airflow. Replacing it without clearing the vent just blows the next one.
Independent, publicly published sources, quoted with attribution and linked in full.
None is affiliated with Emergency Services 24H, reviewed this page, or works in the referral network.
Ben: Working appliance repair technician, Bens Appliances and Junk - “How to Fix an Amana Dryer that Won't Heat” (2020)
Tell us what has failed and how soon you need someone. We route your request to licensed, insured contractors covering your area, and they contact you directly.
Fire, a gas smell, or an injury? Leave the building and call 911 first, then your gas
utility or power company. Use this form once you are safe.
