When a dryer tumbles normally but the clothes come out cold and damp, the motor is clearly working — the problem is the heat. A dryer that won't heat is one of the most common appliance failures we're called for, and the good news is that the cause is usually a single inexpensive part rather than the whole machine. The harder news is that "no heat" can come from very different places depending on whether you own a gas or an electric dryer, and one of those causes is a genuine fire risk. This guide walks through what actually stops a dryer from heating, the safe checks you can do before calling, and how Timeless Appliance Repair gets it diagnosed and fixed — often the same day.
First, figure out what kind of dryer you have
Before troubleshooting anything, it helps to know whether your dryer is electric or gas, because the heating systems are completely different and so are the failures. An electric dryer plugs into a large 240-volt outlet (a thick cord with three or four prongs) and makes heat with an electric heating element. A gas dryer plugs into a standard 120-volt outlet but also connects to a gas line, and it makes heat by igniting gas with a glow-bar igniter. If you can see a gas shut-off valve and a flexible gas line behind the machine, you have a gas dryer. This single fact changes the whole diagnosis: an electric dryer that spins but won't heat almost always points to power or the element, while a gas dryer points to the ignition system.
The most common reasons a dryer stops heating
1. A tripped or failed thermal fuse
The thermal fuse is a small safety device that permanently cuts the heating circuit if the dryer ever overheats. It is the single most common cause of a dryer that tumbles but produces no heat. A thermal fuse almost never fails on its own — it blows because something restricted the airflow and let the dryer run too hot, usually a clogged vent or lint screen. That's why simply replacing the fuse without clearing the airflow problem will leave you back in the same spot within weeks. A proper repair finds the root cause first, then replaces the fuse.
2. Restricted airflow from a clogged vent or lint trap
Lint that builds up in the lint screen, the internal ducting, or the long vent run to the outside wall is the hidden driver behind a surprising number of "no heat" calls. When air can't escape, heat backs up inside the cabinet, trips the safety devices, and shuts the heat down to protect the machine. Beyond the heating problem, a packed vent is one of the leading causes of household dryer fires, so this is the one cause that matters for safety as much as performance. If your dryer takes two or three cycles to dry a load and the cabinet feels very hot, treat the vent as the prime suspect.
3. A burned-out heating element (electric dryers)
The heating element is a coiled wire that glows red-hot to warm the incoming air. Over years of expanding and contracting, the coil eventually breaks, and once it does the dryer will tumble with no warmth at all. A failed element is the classic electric-dryer "no heat" part. It can't be reliably patched — it's replaced as a unit — and a technician confirms it with a continuity test rather than guessing.
4. Only one half of the 240-volt supply is reaching the dryer (electric dryers)
This one surprises a lot of people. An electric dryer uses two 120-volt legs of power: one runs the motor and drum light, the other runs the heating element. If a double breaker is half-tripped, or one leg of the outlet or cord has a loose connection, the drum will spin and the light will work — but there is no power left for heat. Many homeowners assume the machine is broken when the real fix is at the breaker panel or the outlet. A technician checks both legs of voltage at the receptacle before touching the dryer itself.
5. A faulty gas igniter, flame sensor, or valve coils (gas dryers)
On a gas dryer, heat depends on a sequence: the igniter glows, a flame sensor confirms the temperature, and the gas valve coils open to release gas onto the igniter. If the igniter cracks, the coils weaken, or the flame sensor fails, the dryer runs without ever lighting — so it tumbles cold. Gas igniters are fragile and a common wear item, while weak valve coils often cause an intermittent fault where the dryer heats for the first few minutes and then quits. Anything involving the gas line should be handled by a licensed technician, never improvised.
6. A failed cycling or high-limit thermostat
Dryers use several thermostats to regulate temperature and to shut the heat off if it climbs too high. A cycling thermostat that sticks open will keep the heat off, while a high-limit thermostat that has tripped (again, usually because of poor airflow) does the same. These parts are inexpensive but easy to misdiagnose, because their symptoms overlap with the heating element and fuse.
7. A bad thermistor or temperature sensor
Many newer dryers use an electronic thermistor instead of a mechanical thermostat to tell the control board how hot the air is. If the thermistor reports the wrong temperature, the board may decide no heat is needed and shut the element or igniter down. This is a frequent cause of "no heat" on modern electronic-control dryers, and it almost always shows up alongside an error code.
8. A failed control board or timer
Least common, but real: the control board or mechanical timer that tells the dryer when to energise the heat can fail. Because boards are the most expensive part on the list, an honest technician rules out every cheaper cause first and only points to the board once the simpler parts have tested good.
Safe checks you can do before calling
There are a few things you can safely verify yourself, none of which involve opening the cabinet or touching the gas line:
- Clean the lint screen completely and run a short cycle — a packed screen alone can choke airflow enough to trip the heat.
- Check that the outside vent flap actually opens when the dryer runs. If no air is blowing out, the duct is likely blocked.
- For an electric dryer, look at your breaker panel. Reset the dryer's double breaker firmly (off, then on). If the drum spins but there's no heat, a half-tripped breaker is a strong suspect.
- For a gas dryer, confirm the gas shut-off valve behind the machine is fully open and that other gas appliances in the home are working.
- Make sure the dryer isn't on a no-heat setting such as Air Dry, Fluff, or Tumble Only — it happens more often than you'd think.
- Note any error code on the display and write it down; it speeds up the diagnosis.
If those checks don't restore heat, the next steps involve electrical testing or gas components, and that's where a professional should take over.
When to stop and call a professional
Stop and book a repair if you smell gas at any point, if the dryer is extremely hot to the touch, if a breaker keeps tripping when the dryer runs, or if the machine heats briefly and then cuts out. These point to airflow, electrical, or gas-system faults that are unsafe to chase on your own. A dryer that overheats is also actively building toward a fire, so it's not a problem to leave running "until the weekend." Our technicians arrive with the test meters and the common parts on the van, so most no-heat repairs are completed in a single visit.
Brand-specific no-heat behaviour and error codes
Different manufacturers signal a heating fault in different ways, and knowing the language of your machine speeds up the fix. We repair every major brand sold in Canada, and here is how the common ones tend to fail when the heat goes out.
Samsung dryers usually flag a heating problem with an HE or HE1 heating error, or with tS / tO codes that indicate a shorted or open thermistor. Once the thermistor or heater circuit reports a fault, the dryer keeps tumbling cold rather than risk overheating.
LG dryers commonly show tE1 or tE2, which point to a thermistor or heater-sensor problem, and they will hold the heat off until the sensor reads correctly. LG's electronic controls are sensitive to airflow, so a clogged vent often triggers these codes.
Whirlpool dryers frequently display an L2 code, which specifically means the machine isn't receiving its second leg of 240-volt power — exactly the "spins but no heat" scenario tied to the breaker or outlet rather than the dryer itself.
Maytag dryers, which share much of Whirlpool's platform, often pair a PF power-failure flag with thermistor faults, and a weak heating element will quietly produce a long-dry-time complaint before it fails outright.
KitchenAid models use the same electronic diagnostics as their Whirlpool-family siblings, so heat faults usually trace to the element, thermal cut-off, or a control board that has lost the heating output.
Frigidaire dryers tend to throw an E5C or E64 code, which flags an open heating-element circuit — a clear sign the element or its wiring has failed and needs replacement.
GE dryers are more likely to fail silently with no code, so a no-heat GE is diagnosed the old-fashioned way, by testing the element, thermal cut-off, and thermostats for continuity in sequence.
Bosch makes ventless heat-pump and condensation dryers, which heat very differently from a vented machine; on these, "no heat" or poor drying usually traces to the heat-pump system, a clogged condenser, or a sensor rather than a traditional element.
Kenmore dryers are built by several manufacturers, so the no-heat diagnosis follows whichever parent platform the model is based on — our technicians identify the build before ordering any part.
Amana dryers, also part of the Whirlpool family, share the same airflow-sensitive thermal cut-off and element design, so a restricted vent is again a frequent trigger for lost heat.
Why homeowners across the GTA call Timeless Appliance Repair
We've spent more than ten years fixing dryers across Markham, Richmond Hill, and Thornhill, and a no-heat call is bread and butter for us. When you reach out, you're talking to our own local team — real technicians and support staff based right here in the area — and a technician typically calls you back within 5 to 30 minutes to confirm timing. Our technicians are licensed, fully insured, and certified, including TSSA Gas Technician certification for safe work on gas dryers. Every repair is backed by a 90-day parts-and-labour warranty, and there's no separate service fee when you proceed with the repair. We service all major brands, and we'll always tell you honestly whether a fix makes sense or whether the machine has reached the end of its life.
If you'd like a deeper look at our full dryer service, see our dryer repair page. And if you're specifically in Markham, our local guide to a dryer not heating in Markham covers neighbourhood coverage and same-day timing in your area.
Ready to get the heat back on
A dryer that won't heat rarely fixes itself, and when airflow is involved it can quietly become a safety hazard. The fastest path back to dry laundry is a proper diagnosis from someone who works on these machines every day. Call us at (416) 831-8038 for same-day service, or book your repair online and we'll get a licensed technician out to you.
Frequently asked questions
Why is my dryer running but not heating?
A spinning drum means the motor is fine, so the fault is in the heating circuit. The usual suspects are a blown thermal fuse (from restricted airflow), a failed heating element on electric dryers, a faulty igniter on gas dryers, or only one leg of 240-volt power reaching an electric machine. A technician tests each in sequence to pinpoint it.
Is it worth repairing a dryer that won't heat, or should I replace it?
Most no-heat faults are caused by a single low-cost part such as a fuse, element, igniter, or thermostat, which makes repair the sensible choice on a machine that's otherwise sound. Replacement only makes sense on a very old dryer with multiple failing systems. We'll give you an honest assessment before any work begins.
Can a clogged vent really stop my dryer from heating?
Yes. When the vent or lint screen is blocked, hot air can't escape, the cabinet overheats, and the dryer's safety devices shut the heat off to protect the machine — often blowing the thermal fuse in the process. Clearing the airflow is part of every proper no-heat repair, not an optional extra.
My dryer heats a little but clothes are still damp — is that the same problem?
It's usually the early stage of one. Weak or intermittent heat often points to a partially restricted vent, weakening gas valve coils, or a thermostat starting to fail. Catching it at this stage is cheaper than waiting for the heat to cut out completely.
How can I tell if my dryer is gas or electric?
An electric dryer uses a large 240-volt outlet with a thick three- or four-prong cord and has no gas connection. A gas dryer plugs into a normal 120-volt outlet and also connects to a gas line with a shut-off valve behind the machine. The type determines which heating components could be at fault.
Can I replace a dryer heating element myself?
We don't recommend it. Reaching the element means dismantling the cabinet and working around 240-volt wiring, and an incorrect reassembly can create an airflow or electrical hazard. A technician also confirms the element is genuinely the failed part rather than a thermostat or fuse, so you don't replace the wrong component.
Why does my electric dryer spin but make no heat at all?
That pattern strongly suggests the dryer is only receiving one of its two 240-volt legs. The motor and light run on the first leg, but the heating element needs the second. A half-tripped double breaker, a worn outlet, or a damaged cord can cut that second leg while everything else keeps working.
How long does a dryer heating repair take?
Most no-heat repairs are completed in a single visit. Once the technician confirms the failed part, common items such as fuses, elements, igniters, and thermostats are usually carried on the van, so there's no waiting on a second appointment in the majority of cases.
Is a dryer that won't heat a fire hazard?
It can be. The most common cause — restricted airflow from lint buildup — is also a leading cause of dryer fires, and a machine that overheats enough to trip its safety devices is signalling a problem you shouldn't ignore. Stop using a dryer that smells hot or scorched and have it checked promptly.
Do you repair gas dryers?
Yes. Our technicians hold TSSA Gas Technician certification, which is required to work safely and legally on gas appliances in Ontario. Gas dryer no-heat faults usually come down to the igniter, flame sensor, or valve coils, all of which we diagnose and replace as part of our standard service.
What brands of dryers do you repair?
We service all major brands sold in Canada, including Samsung, LG, Whirlpool, Maytag, KitchenAid, GE, Bosch, Frigidaire, Kenmore, and Amana, plus others.
Do you offer same-day dryer repair near me?
In most cases, yes. We offer same-day service across Markham, Richmond Hill, and Thornhill, and a technician usually calls back within 5 to 30 minutes to confirm a window. Call (416) 831-8038 or book online to get started.
