When a dryer is not heating, which part is bad depends on a short test order. Two common causes cost nothing to correct: missing half of the electric supply and blocked airflow. Check those first, then test the thermal fuse, high-limit thermostat, heating element, or gas ignition parts.
Symptom Clues
- A running motor shows that some power and the basic controls work.
- A dryer not heating but blowing air points to the heat circuit or power supply.
- Long cycles with some warmth point toward restricted airflow.
- Electric and gas dryers create heat with different parts.
Quick Diagnosis Table
| Symptom detail | Likely cause | Part to check | Test |
| Runs with no heat | Power, fuse, or element | Supply and heat circuit | Voltage and continuity |
| Low heat and long cycles | Blocked airflow | Vent | Airflow inspection |
| Heats then stops | High-limit opening | Vent and thermostat | Airflow and continuity |
| Gas clicks with no flame | Igniter or coils | Burner parts | Model procedure |
| Breaker tripped | Supply or grounded element | Circuit and element | Qualified voltage test |
Found the faulty part? Find the exact thermal fuse, heating element, high-limit thermostat or igniter for the model number.
Verify Your Model First
The dryer model tag is usually on the door jamb, inside the door opening, or on the back panel near the power cord. Record the complete model number, including its suffix. Parts that share a common name can still have different sizes, ratings, brackets, and connectors. The model number, rather than the part name or a matching photo, decides the correct service part.
Safety
- Unplug the dryer before opening a panel or performing any continuity test.
- Shut the gas supply valve on a gas dryer.
- Let recently used parts cool before touching them.
- Photograph each wire connection before disconnecting it.
- Keep hands away from sharp cabinet edges and spring-loaded parts.
- Leave live-voltage testing to a qualified person unless the meter and shock precautions are fully understood.
Tools
- Multimeter
- Nut driver
- Phillips screwdriver
- Flashlight
- Vent brush
How to Test an Electric Dryer That Runs but Does Not Heat
Test the Voltage
- Pull the dryer out and remove the terminal block cover.
- Set the meter to AC voltage with the dryer powered for the test.
- Confirm 120 volts from neutral to each hot leg and about 240 volts across the two hot legs.
- Unplug the dryer if voltage is correct. Call an electrician if it is not.
Test the Element
- Release the front-panel clips and remove the panel on the source model family.
- Disconnect one element wire.
- Set the meter to resistance and test across the terminals. The source model family calls for 10 to 12 ohms.
- Replace the element when its reading is outside the model specification or open.
Test the High-Limit Cut-Off
- Remove the lint screen and front panel, then open the blower housing on the source model family.
- Disconnect one high-limit wire and test across its terminals for continuity.
- Replace the cut-off kit when it is open.
- Test from an element terminal to the metal housing. Continuity there means the element is grounded.
What the Result Means
- A failed test identifies the circuit or part that needs model-specific confirmation.
- A passing test clears that item and moves the diagnosis to the next step in the listed order.
- A replacement should never be selected from the symptom alone.
- Any airflow or wiring cause that damaged the part must be corrected before regular use.
The Six Causes in Check Order
- Reset both linked breaker handles and confirm full voltage.
- Clear the lint screen and exhaust vent.
- Remove lint from the blower path.
- Test the thermal fuse.
- Test the high-limit thermostat.
- Test the electric element or gas ignition parts.
Before Ordering a Part
A failed test should be written down with the meter setting, the measured value, and the wire that was disconnected. That record helps prevent a later mix-up. Compare the result with the model’s wiring diagram or technical sheet because terminal names and expected readings can change between models.
Before spending money, repeat any surprising reading after checking the meter leads and making firm contact with clean terminals. One repeatable result is more useful than several guesses based on sound, age, or appearance alone.
- Match the full model number and revision suffix.
- Compare the original connector, bracket, dimensions, and rating with the listing.
- Read any approved replacement or substitution numbers.
- Check whether the listing contains one part or a complete kit.
- Keep the original part until the repair has passed a full cycle.
Check the Repair
Reconnect every wire from the photo, close all panels, and restore the vent before running the dryer. Start with a short empty test, then use a small damp load. Watch for normal drum movement, steady airflow at the outside hood, and heat that cycles rather than rising without control. Stop at once if a breaker trips, a burning odor appears, the cabinet becomes unusually hot, or a new scraping sound begins. A passing part test does not excuse a blocked vent, damaged wire, loose terminal, or jammed mechanical part. The dryer should return to normal behavior without creating a second symptom.
When to Stop and Call a Professional
- Stop when a live-voltage test is required and safe meter work is unfamiliar.
- Stop when the terminal block, cord, outlet, or house wiring shows heat damage.
- Stop when a gas odor is present, shut off the gas, leave the area, and contact the gas utility.
- Ask for service when the wiring diagram does not match the dryer or more than one control-circuit fault is present.
- Ask for service when the repair requires lifting the drum and it cannot be handled safely.
FAQ
What Part Makes the Dryer Hot?
An electric dryer uses a heating element. A gas dryer uses an igniter, burner, and gas valve system.
Why Can an Electric Dryer Run Without Heat?
The motor can run on one 120-volt leg while the heater lacks the full 240 volts.
Is It Worth Fixing?
It often is when testing identifies one ordinary part and the dryer is otherwise sound.
Why Is It Still Slow After Cleaning the Screen?
The wall duct, exterior flap, or blower housing may still be restricted.
Once the test names the part, shop thermal fuse parts for your model and confirm the fit with the full model number.
Final Thoughts
Start with the free observations, follow the tests in order, and stop as soon as one result clearly fails. A model-specific part choice and a correction of the original cause make the repair safer and less likely to be repeated.