Dryer runs but air is completely cold
The drum turns and the timer runs, but there is no warmth at all.
Start here: Check the cycle setting first, then confirm airflow and whether the dryer is getting full power.
Dryer troubleshooting
Dryer Not Heating
Direct answer: If your dryer runs but does not heat, start by separating three common branches: wrong cycle or low-heat setting, restricted airflow, and missing full power. If those check out, the most likely internal causes are a failed dryer heating element on an electric dryer, or an ignition-related failure on a gas dryer.
Most likely: The most common homeowner-fixable causes are a clogged lint path or vent, a tripped dryer breaker on electric models, or a failed dryer thermal cutoff or dryer heating element after airflow problems.
A dryer that tumbles normally but leaves clothes damp can look like a major failure when the real problem is airflow or power. Work from the outside in: confirm the cycle, check whether the dryer is electric or gas, make sure the vent is not choking airflow, and only then consider internal heat parts.
Don’t start with: Do not start by ordering a control board or guessing at gas parts. Most no-heat dryers are caused by settings, venting, power supply issues, or a small heat-circuit part.
Runs but no heat?Check the cycle and vent airflow before opening the dryer.
Electric vs gas mattersAn electric dryer can tumble on partial power, while a gas dryer may tumble with no flame.
Last reviewed: 2026-03-17
What kind of no-heat problem do you have?
Dryer gets a little warm but takes forever to dry
Clothes eventually dry, but only after multiple cycles or very long run times.
Start here: Start with lint buildup and vent restriction. Weak airflow is more likely than a failed part.
Electric dryer tumbles normally but never heats
The dryer seems otherwise normal, but there is no heat on any heated cycle.
Start here: Check the double breaker or outlet supply before assuming the dryer heating element failed.
Gas dryer clicks or glows but does not stay hot
You may hear ignition attempts, smell warm air briefly, or get heat only at the start of the cycle.
Start here: After airflow checks, suspect a gas-dryer heat-circuit problem such as the dryer igniter or dryer thermal cutoff and stop if gas behavior seems abnormal.
Most likely causes
1. Wrong cycle, temperature, or moisture-sensing behavior
Air-fluff, no-heat, delicates, or some sensor cycles can feel like a heating failure when the dryer is actually running as selected.
Quick check: Run a small load on a timed high-heat cycle and feel for warm air after a few minutes.
2. Restricted lint path or dryer vent
Poor airflow can prevent normal heating, cause weak heat, or trip a dryer thermal cutoff so the dryer later runs with no heat.
Quick check: Clean the lint screen, inspect the vent hose for crushing, and compare airflow at the outside vent hood.
3. Missing full power on an electric dryer
Many electric dryers will tumble on 120 volts but need the full 240-volt supply to heat.
Quick check: Look for a partially tripped double breaker or an outlet problem if the dryer runs but never gets warm.
4. Failed dryer heat-circuit component
Once settings, airflow, and supply are ruled out, the likely branch is a failed dryer heating element, dryer thermal cutoff, dryer high-limit thermostat, or on gas models a failed dryer igniter.
Quick check: This branch is more likely if the dryer has proper power, a clear vent, and still produces no heat on a heated cycle.
Step-by-step fix
Step 1: Confirm you are testing a heated cycle
A no-heat complaint is sometimes just the wrong cycle, low temperature selection, or a sensor cycle that is not behaving the way you expect with a tiny load.
- Empty the dryer if it is packed tightly, then place in a few damp items or a small normal load.
- Select a timed dry cycle with a high-heat or regular heat setting, not air fluff or no heat.
- Start the dryer and wait several minutes before checking for warmth at the drum opening or exhaust.
- If your dryer has eco or low-temp options, turn those off for this test.
Next move: The dryer likely does heat, and the issue is cycle selection, load size, or expectations from a sensor cycle rather than a failed part. Move to airflow and vent checks next.
What to conclude: This separates a true heating failure from a settings or cycle issue before you spend time on deeper diagnosis.
Stop if:
- You smell burning lint or hot plastic.
- The dryer makes unusual electrical buzzing, arcing, or popping sounds.
- The control panel shows an error you cannot clear and the dryer will not run normally.
Step 2: Check lint screen, vent hose, and outside airflow
Restricted airflow is one of the most common reasons a dryer heats poorly, overheats, or blows a thermal cutoff and then stops heating entirely.
- Unplug the dryer before moving it.
- Clean the lint screen with warm water and mild soap if it looks coated with residue from dryer sheets or fabric softener, then dry it fully.
- Inspect the dryer vent hose behind the dryer for crushing, kinks, heavy lint buildup, or a disconnected section.
- Go outside while the dryer runs on a heated cycle and check whether the vent hood opens fully and pushes a strong stream of air.
- If airflow is weak, disconnect power again and correct obvious hose kinks or blockages you can safely reach.
Next move: If airflow improves and heat returns or drying time drops sharply, the main problem was vent restriction. If airflow seems normal or the dryer still has no heat, continue to the power-supply branch.
What to conclude: A blocked vent can cause weak heat by itself or can overheat the dryer enough to open a safety device in the heat circuit.
Step 3: Rule out partial power on an electric dryer
An electric dryer can tumble with one leg of power missing, which makes it look like the motor is fine while the heater never energizes.
- If you have a gas dryer, skip this step and go to the next one.
- Check your electrical panel for a partially tripped dryer double breaker. Turn it fully off, then fully back on once.
- Inspect the dryer plug and outlet visually for scorching, looseness, or signs of overheating without touching bare conductors.
- If the breaker trips again or the outlet looks damaged, stop using the dryer.
- If you are comfortable and equipped to test outlet voltage safely, only do so according to your meter instructions; otherwise leave electrical testing to a pro.
Next move: If resetting the breaker restores heat, monitor the dryer closely because a repeat trip points to an electrical or appliance fault that needs diagnosis. If the breaker is fine and the dryer still has no heat, the problem is more likely inside the dryer heat circuit.
Step 4: Separate electric-heater failure from gas-ignition failure
Once settings, airflow, and supply are ruled out, the likely internal branch depends on whether the dryer is electric or gas.
- For an electric dryer, note whether there is still no heat at all on a timed high-heat cycle after airflow and breaker checks. That pattern strongly supports a failed dryer heating element or a safety device in the heater circuit.
- For a gas dryer, listen for repeated clicking, watch for a brief glow through an inspection opening if your model has one, or note whether heat appears only briefly and then disappears.
- If a gas dryer shows odd ignition behavior, shut it off and do not keep cycling it repeatedly.
- If the dryer recently had severe vent restriction, give extra weight to a failed dryer thermal cutoff or dryer high-limit thermostat branch.
Next move: If this clearly points to one branch, you can focus on the right repair instead of guessing between unrelated parts. If the pattern is still unclear, stop before disassembling further and consider a technician diagnosis.
Step 5: Decide whether this is a safe DIY repair or a pro call
At this point the easy external causes are covered, and the remaining branches involve opening the dryer and confirming specific heat-circuit parts.
- If you have strong evidence of a failed dryer heating element, dryer thermal cutoff, dryer high-limit thermostat, or dryer igniter, use your model information to confirm fit before buying anything.
- Replace only the part supported by the symptom branch, and correct any airflow problem first so the new part does not fail again.
- If the diagnosis points toward wiring damage, repeated breaker trips, gas-valve behavior, or an unclear control issue, stop and call a qualified appliance technician.
- After any repair, recheck vent airflow and run a timed heated cycle with a normal load.
Repair guide: How to Replace a Dryer Heating Element
Related repair guide: How to Replace a Dryer Thermal Cutoff
A good result: A successful repair should restore steady heat and shorten drying time without overheating the cabinet or tripping breakers.
If not: If the dryer still does not heat after the supported repair, the diagnosis was incomplete and further testing is needed.
What to conclude: This is the point where parts become reasonable to consider, but only after the symptom pattern supports a specific branch.
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FAQ
Why does my dryer run but not heat?
The most common reasons are the wrong cycle setting, a clogged vent, partial power on an electric dryer, or a failed dryer heat-circuit part such as a dryer heating element, dryer thermal cutoff, dryer high-limit thermostat, or on gas models a dryer igniter.
Can a clogged vent make a dryer stop heating?
Yes. A restricted vent can cause weak drying, overheating, and eventually an open safety cutoff that leaves the dryer tumbling with no heat. That is why airflow checks come before parts.
Why would an electric dryer tumble but not heat?
Electric dryers often use one part of the power supply for the motor and the full supply for the heater. If one side of the supply is lost, the drum may still turn while the dryer produces no heat.
Should I replace the dryer heating element first?
Not first. A dryer heating element is a common failure on electric dryers, but you should rule out the cycle setting, vent restriction, and power-supply problem before buying one. Otherwise you may replace the wrong part.
Is it safe to keep using a dryer that is not heating?
Not always. If the dryer simply tumbles with no heat and there are no burning smells, gas odors, or overheating signs, brief testing is usually enough for diagnosis. Stop immediately if you smell gas, see scorching, or the dryer gets unusually hot.