Dryer Repair Problems: Why It Won’t Heat, Won’t Turn, or Won’t Dry
A dryer that stops working creates a specific kind of problem. The washing machine still works, so you can wash clothes — you just can’t dry them. Wet laundry piles up in the basket, the tumble dryer runs and achieves nothing, and within a day everything starts to smell musty.
Before you call a repair service or start shopping for a replacement, there’s a good chance you can fix the problem yourself. Dryers are mechanically simple machines, and most faults are caused by a small number of components — many of which cost under $30.
The key is understanding what the dryer is doing. A dryer that runs but produces no heat has a different fault from one whose drum won’t turn. A dryer that takes three cycles to dry has a different fault again. Reading the symptom first tells you where to look, and that’s the difference between a targeted repair and replacing parts at random.
Most dryer faults fall into a small number of categories: the heating system, the drive system, the airflow path, and the electrical supply. Work through them in order of likelihood and you’ll usually find the fault within an hour.
Start With the Symptom, Not the Part
Before you touch anything, establish exactly what the machine is doing. The symptom narrows the fault immediately.
| Symptom | Most Likely Cause |
|---|---|
| Runs but produces no heat | Thermal fuse, heating element, or igniter |
| Drum doesn’t turn, motor runs | Broken drive belt or seized roller |
| Takes two or three cycles to dry | Blocked vent duct or clogged lint filter |
| Drum turns but very slowly | Stretched belt or worn motor |
| Loud squealing or thumping during spin | Worn drum rollers or idler pulley |
| Won’t start at all, no lights | Power supply, door switch, or control board |
| Runs for a few minutes then stops | Thermal overload or blocked airflow |
| Trips the circuit breaker | Failed heating element or wiring fault |
Reading the symptom first saves you from the most common DIY mistake — replacing a component that was never faulty.
When a Dryer Won’t Heat
A dryer that runs but produces no heat is the most common dryer fault, and it has its own dedicated diagnostic guide. The short version:
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Thermal fuse — a one-time safety device that blows when the dryer overheats, usually because of restricted airflow. The most common cause, and a $10 to $15 part.
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Heating element — the resistance coil that produces heat on electric dryers. It burns out with age.
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Igniter — on gas dryers, a weakened igniter glows but can’t draw enough current to open the gas valve.
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Cycling thermostat — if it fails open, the element never receives power.
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Blocked vent — the underlying cause of most thermal fuse failures. Always clear it.
Most no-heat faults are fixable for under $50. The exceptions are gas valve failure and control board faults — both of which usually mean replacement on a dryer over seven years old.
For the complete no-heat diagnostic — every fault, every multimeter test, and the full repair-or-replace framework — see our dedicated guide:
[Dryer Not Heating: Complete Diagnostic →HERE
When the Drum Won’t Turn
If you can hear the motor running but the drum stays still, the fault is in the drive system rather than the heating system.
The most common cause is a broken drive belt. The belt wraps around the drum and connects to the motor pulley — it’s a consumable wear item, designed to be replaced periodically. When it snaps, the motor runs freely but nothing turns the drum. Belts cost $15 to $30 and take about 45 minutes to replace.
If the belt is intact, check the drum rollers. These are small wheels that support the drum as it rotates. Over time the bearings wear out, the rollers seize, and the drum becomes difficult to turn. A seized roller can also cause the belt to slip or break. Rollers cost $15 to $25 each and are usually replaced as a set.
The idler pulley — the spring-loaded wheel that keeps tension on the belt — is the third suspect. If it seizes or its spring breaks, the belt goes slack and the drum won’t turn properly.
[Get the Dryer Drum Not Turning guide — $7.95 →HERE
When a Dryer Takes Multiple Cycles to Dry
A dryer that runs for a full cycle and still leaves clothes damp usually isn’t a mechanical fault at all — it’s an airflow problem.
The lint filter is the first place to look. A filter that looks clean can be coated with an invisible film of fabric softener residue that blocks airflow. Wash it in warm soapy water, scrub gently, and rinse. If water beads on the surface rather than flowing through, there’s residue present.
The vent duct is the second suspect. Pull the dryer away from the wall, disconnect the duct, and look inside. A duct that hasn’t been cleaned in years can be half-blocked with compacted lint. Clean it thoroughly, or replace it if it’s a flexible foil duct that’s become crushed or coated internally. Rigid metal duct is preferable for both airflow and fire safety.
Check the exterior vent hood as well. The flap should open freely when the dryer runs. If it’s stuck, painted shut, or blocked by a bird’s nest, airflow is restricted.
This matters more than people realise. Restricted airflow is the leading cause of thermal fuse failure — so if the vent is blocked and you replace the fuse without clearing it, the new fuse will blow within days.
When a Dryer Is Noisy
Noise during operation points to worn mechanical components rather than electrical faults.
A high-pitched squeal that gets worse as the drum speeds up usually indicates worn drum rollers or a dry idler pulley. A rhythmic thump suggests a flat spot on a roller or an unbalanced load. A deep rumbling sound points to worn drum bearings — a more serious fault, though less common on dryers than on washing machines.
Start by checking the load. A single heavy item tumbling alone can produce a thumping noise that disappears once you add more laundry. If the noise persists with a balanced load, inspect the rollers and idler pulley.
When a Dryer Won’t Start At All
A completely dead dryer — no lights, no response — has a power supply fault.
Electric dryers run on a 240V supply through a double-pole breaker. If one pole has tripped, the dryer may appear dead, or the drum may turn without heat. Check the breaker panel first and reset both poles.
If the breaker is fine, check the door switch. The dryer won’t run if it can’t confirm the door is closed. Test the switch for continuity — it should close when the door is latched.
Less commonly, the control board has failed. This is the most expensive dryer fault — a replacement board costs $100 to $250 — and on a machine over seven years old it usually tips the balance toward replacement.
When a Dryer Overheats
If the dryer cabinet feels unusually hot, or the machine shuts down partway through a cycle, the airflow is restricted or a thermostat has failed.
Overheating is a fire risk, so treat it seriously. Clean the lint filter, clear the vent duct, and check the exterior vent hood. If airflow is clear and the dryer still overheats, the cycling thermostat may have failed closed — meaning it never switches the element off. Replace it.
Own a Specific Brand?
Different brands have different weak points. Fisher & Paykel and Samsung heat pump dryers commonly develop sealed system faults. LG and Whirlpool vented dryers most often fail at the thermal fuse or heating element. Bosch machines are known for element faults on vented and condenser models. Maytag dryers frequently develop moisture sensor problems that cause early shut-off.
If your dryer is displaying a fault code or you want brand-specific diagnostic procedures, our complete brand guides cover washers, dryers, and dishwashers in one reference — with fault code libraries and known failure patterns for your exact brand.
When to Repair and When to Replace
The 50% rule is your guide. If the total cost of repairs exceeds half the price of a new equivalent dryer, replacement is the smarter choice.
Apply it honestly:
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A thermal fuse at $12 on a $600 machine is 2% of replacement. Fix it.
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A drum belt at $20 on a $700 machine is 3%. Fix it.
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A cycling thermostat at $20 on a $650 machine is 3%. Fix it.
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A heating element at $60 on a $550 machine is 11%. Fix it.
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A gas igniter at $50 on an $800 machine is 6%. Fix it.
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A drum roller set at $60 on a $600 machine is 10%. Fix it.
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A control board at $200 on a seven-year-old machine is 33%. Borderline.
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A gas valve at $150 plus $150 labour on a 12-year-old machine is 50%. Bin it.
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A heat pump sealed system at $400 on an eight-year-old machine is 40%. Borderline — get a second opinion.
For dryers over ten years old, lower the threshold to 30%. The machine is approaching the end of its service life, and a repair costing $150 may only buy another 18 months.
What to Check Before You Call a Professional
Before spending $80 to $150 on a call-out fee, do these checks yourself:
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Clean the lint filter — free, takes two minutes, resolves most drying performance complaints
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Check the vent duct — disconnected, kinked, or blocked ducts cause overheating and slow drying
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Check the circuit breaker — confirm both poles of the double-pole breaker are on
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Inspect the drive belt — visible through the rear panel on most dryers
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Test the thermal fuse — a multimeter continuity test takes five minutes
If none of these resolve the fault, you’re into the territory where a professional diagnosis makes sense — or where the guide below will save you the call-out fee.
Frequently Asked Questions
Why is my dryer running but not heating?
The most common cause is a blown thermal fuse, which cuts power to the heating circuit when the dryer overheats. It’s a $10 to $15 part, but you must also clear the airflow restriction that caused it to blow.
Why does my dryer take two or three cycles to dry clothes?
Restricted airflow. A clogged lint filter or blocked vent duct prevents hot air from reaching the clothes efficiently. Clean both and drying times should return to normal.
Why won’t my dryer drum turn when the motor runs?
A broken drive belt is the most likely cause. The belt connects the motor to the drum and is a consumable wear item. Replacements cost $15 to $30.
Is it worth repairing a dryer that won’t heat?
Usually yes. Most no-heat faults are caused by inexpensive parts — a thermal fuse, a thermostat, or a heating element. The exceptions are control board failures and gas valve faults.
How much does it cost to fix a dryer?
Between $10 and $350 depending on the fault. The most common faults cost under $80 in parts. Control board and gas valve faults are the expensive ones.
Where to Go Next
This post has covered the most common dryer faults and the decision framework for repair or replacement. Depending on your situation, one of these is your next step:
If your dryer runs but won’t heat — the most common fault — our dedicated guide covers every cause in order, with multimeter testing procedures and the repair-or-replace calculation for your machine.
[Get the Dryer Not Heating guide — $7.95 →HERE
If your drum isn’t turning, that’s a drive system fault rather than a heating fault.
[Get the Dryer Drum Not Turning guide — $7.95 →HERE
If you own a specific brand and want fault codes and brand-specific diagnostics, our complete brand guides cover washers, dryers, and dishwashers in one reference.
If you want to keep reading on any laundry fault, browse the full collection:
[Browse All Laundry Appliance Guides →HERE
If your washing machine is also playing up, see our guide to dryer repair. HERE
