Dryer Not Heating: Common Causes and What to Check

Why Is My Dryer Not Heating?

A clothes dryer needs three things to remove moisture effectively:

• A source of heat.
• Adequate airflow.
• Enough drying time.

In conventional dryers, heated air moves through the drum to help moisture evaporate from clothes.

The moist air must then leave through the exhaust system.

When the dryer fails to produce heat or airflow is restricted, clothes may remain wet.

However, there is an important distinction:

A dryer that produces no heat is not necessarily experiencing the same problem as a dryer that heats normally but takes too long to dry clothes.

The second situation may primarily involve a clogged vent, an overloaded drum, or unusually wet laundry.

The first step is determining which symptom you are experiencing.

Electric vs. Gas Dryers: What's the Difference?

Both electric and gas dryers are common in the United States.

Although both use electricity for controls and the motor, they generate heat differently.

Always confirm electrical and installation requirements using the model's rating label and owner's manual.

What About Heat Pump Dryers?

Some electric dryers use heat pump technology instead of a conventional electric resistance heating system.

Heat pump dryers generally operate at lower temperatures, and many models do not require an outdoor exhaust vent.

Troubleshooting may involve lint filters, additional filters, the condenser, the water reservoir, and the heat pump system.

Conventional heating element and exhaust vent troubleshooting does not automatically apply to every electric dryer.

Most Common Causes of a Dryer Not Heating

These are possible causes, not confirmed diagnoses.

What to Check First

Is the Dryer Actually Producing No Heat?

Check whether the drum tumbles normally but the clothes remain cold and wet.

Some drying cycles include a final cool-down phase.

During this phase, the dryer intentionally stops heating.

If the dryer only feels cool near the end of the program, it may be operating normally.

Does the Selected Cycle Use Heat?

Look for settings such as:

• Air Only.
• Air Fluff.
• No Heat.
• Cool Down.
• Delicate.
• Low Heat.
• Eco or Energy Saver.

Air Only, Air Fluff, and No Heat settings typically operate without active heating.

Other programs may use reduced temperatures or different heating patterns to protect fabrics or save energy.

Check the owner's manual.

Is the Lint Filter Clean?

A clogged lint filter can restrict airflow.

This is one of the easiest and most important checks.

Is Airflow Restricted?

In conventional vented dryers, a blocked exhaust system can reduce drying performance and cause overheating.

Do not continue operating the dryer if the vent may be dangerously obstructed.

Is Your Dryer Electric or Gas?

The answer determines which heating components may be involved.

If you are unsure, check the model label or owner's manual.

You do not need to open any panels to identify the dryer type.

Step-by-Step Dryer Troubleshooting

Step 1: Identify Your Dryer Type

Check the model number, rating label, or owner's manual.

Determine whether the appliance is:

• A conventional electric dryer.
• A natural gas dryer.
• A propane gas dryer, if applicable.
• An electric heat pump dryer.
• Another ventless dryer design.

Never open the cabinet to identify the heating system.

Step 2: Check the Temperature Settings

Make sure the selected program uses heat.

If Air Only or No Heat is enabled, the drum may tumble normally without heating the air.

Choose an appropriate heated cycle for the fabric.

Do not use high heat on clothing that requires delicate drying.

Step 3: Determine Whether the Problem Occurs Throughout the Cycle

Some dryer programs change the heating level during operation.

Automatic cycles may also end earlier than expected when sensors detect that the load is dry.

If the manufacturer permits it and there are no ventilation or safety concerns, a short heated Timed Dry cycle may help distinguish a cycle-setting issue from a persistent heating problem.

Run this check only with the lint filter and exhaust system properly installed.

Do not open service panels or touch internal components while the dryer is operating.

Step 4: Clean the Lint Filter

The lint filter, also called a lint screen, captures fibers released from clothes during drying.

To clean it:

• Stop the dryer.
• Allow it to cool if necessary.
• Remove the lint filter according to the manual.
• Remove accumulated lint.
• Check for visible residue or buildup.
• Reinstall the filter correctly.

Some manufacturers recommend occasional additional cleaning to remove residue from dryer sheets or fabric softeners.

Do not use water or cleaning chemicals unless the manufacturer permits them.

Never run the dryer without its required lint filter.

Step 5: Check the Laundry Load

An overloaded dryer may prevent clothes from tumbling freely.

This can reduce drying efficiency.

Check whether:

• Clothes have enough room to move inside the drum.
• Large blankets or comforters are tightly packed.
• Heavy items are mixed with lightweight fabrics.
• The load exceeds the manufacturer's recommended capacity.

Reduce the load if necessary.

Step 6: Inspect Accessible Exhaust Vent Sections

In conventional vented dryers, moist air must be exhausted outdoors.

Without moving the appliance, inspect accessible portions of the vent system.

Look for:

• Crushed ductwork.
• Flattened transition ducts.
• Visible lint accumulation.
• A blocked outdoor vent.
• A damaged exterior vent hood.
• Objects restricting airflow.

Do not disconnect the exhaust duct and operate the dryer as a troubleshooting test.

On gas dryers, this could allow combustion gases to enter the home.

Step 7: Check the Outdoor Vent Outlet

The dryer exhaust outlet is usually located on an exterior wall or another approved location.

Look for:

• Leaves or debris blocking the outlet.
• A damaged vent cover.
• Visible lint buildup.
• Snow blocking the outlet, where applicable.
• Recent changes to the vent installation.

Do not climb onto roofs or use ladders in unsafe conditions to inspect the outlet.

If the blockage is located in an inaccessible section, contact a professional dryer vent cleaning service.

Step 8: Check the Circuit Breaker on Electric Dryers

Many conventional electric dryers in U.S. homes use a 208/240-volt electrical supply.

The circuit typically has a two-pole breaker.

Depending on the electrical problem, the dryer drum may continue turning even when the heating system is not receiving the power it needs.

Safe checks:

• Locate the electrical panel.
• Identify the breaker serving the dryer.
• Check whether it has tripped.
• If there is no visible damage, smoke, abnormal heat, or water near the electrical equipment, follow the panel's safe reset procedure if appropriate.
• If the breaker trips again, stop attempting to reset it.

Do not open the electrical panel's internal compartments.

Do not use a multimeter on a high-voltage dryer outlet as a homeowner troubleshooting step.

If incorrect voltage or a wiring problem is suspected, contact a qualified electrician.

Step 9: Check External Gas Supply Conditions on Gas Dryers

A gas dryer can tumble normally even when gas is unavailable to the burner.

If there is no suspected gas leak and the area is safe, check the position of the accessible external gas shutoff valve according to the manufacturer's instructions.

On many installations, a valve handle parallel to the pipe indicates the open position.

However, confirm the correct configuration and operating procedure for your installation.

Do not handle gas fittings, regulators, or internal valves.

If the gas supply was shut off because of maintenance, a safety concern, or a suspected leak, do not restore it yourself.

Contact the gas utility or a qualified professional.

Step 10: Look for Error Codes

Some dryers can display warnings related to:

• Exhaust vent restrictions.
• Electrical supply problems.
• Temperature sensors.
• Heating failures.
• Airflow problems.
• Gas heating systems.
• Other internal components.

Record the displayed code.

For example, certain LG dryers display d80, d90, or d95 codes associated with exhaust airflow restrictions.

Code meanings depend on the manufacturer and model.

Never use another brand's error code chart to diagnose your dryer.

Step 11: Consider Internal Heating Components

If the lint filter and ventilation are clear, the cycle settings are correct, and the external power or gas supply checks have been completed, an internal component may be defective.

Possible electric dryer components:

• Heating element.
• High-limit thermostat.
• Thermal cut-off.
• Thermal fuse.
• Temperature sensor.
• Heater relay.
• Electronic control board.

Possible gas dryer components:

• Igniter.
• Flame sensor.
• Gas valve coils.
• Gas valve.
• Thermostat.
• Thermal protection devices.
• Electronic controls.

These components require professional diagnosis.

Do not remove panels to access the heating system.

Step 12: Evaluate the Results

After basic checks, determine whether:

• The dryer completes its cycle normally.
• The temperature matches the selected settings.
• Clothes dry in their usual amount of time.
• Airflow appears normal.
• Error codes are displayed.
• Unusual sounds or smells are present.

If the dryer still produces no heat or airflow restrictions remain, stop using it and arrange appropriate service.

Dryer Not Heating: Troubleshooting Decision Tree

Decision 1: Does the Dryer Turn On and Tumble?

No.

The problem may involve electrical power, the door, controls, or motor.

Follow a dryer-not-starting troubleshooting guide.

Yes.

Continue to Decision 2.

Decision 2: Is a Heated Cycle Selected?

No.

Choose a heated cycle appropriate for the fabric.

Yes.

Continue to Decision 3.

Decision 3: Is the Lint Filter Clean?

No.

Clean it according to the owner's manual.

Yes.

Continue to Decision 4.

Decision 4: Is There Evidence of a Blocked Exhaust Vent?

Yes.

Stop using the dryer and have the restriction corrected before operating it again.

No.

Continue to Decision 5.

Decision 5: Is It a Conventional Electric Dryer?

Yes.

Check the circuit breaker and accessible electrical supply conditions.

If electrical power is correct but the dryer produces no heat, professional heating system diagnosis may be necessary.

No.

Continue to Decision 6.

Decision 6: Is It a Gas Dryer?

Yes.

Check only safe, accessible external gas supply conditions.

If you smell gas, evacuate immediately.

If the supply is correct but the dryer does not heat, arrange professional service.

No.

Continue to Decision 7.

Decision 7: Is It a Heat Pump Dryer?

Yes.

Check the filters, water reservoir, accessible condenser components, and model-specific settings.

No, or you are unsure.

Consult the owner's manual to identify the heating system.

Decision 8: Is the Dryer Still Not Heating?

Yes.

A heating component, temperature sensor, control, or thermal safety device may have failed.

Next step: Arrange professional diagnosis.

Electric Dryer Not Heating: What Could Be Wrong?

Conventional electric dryers typically use an electric resistance heating element.

How Does the Heating Element Work?

The heating element converts electrical energy into heat.

Air moves through the heating system before entering the dryer drum.

Temperature sensors and safety devices help regulate operating temperatures.

If the heating element fails, the dryer may continue tumbling without producing heat.

Possible Causes

• A broken or damaged heating element.
• Incorrect electrical supply.
• A circuit breaker problem.
• An open thermal cut-off.
• A defective thermostat.
• A faulty heater relay.
• A temperature sensor problem.
• An electronic control failure.

Why Does an Electric Dryer Tumble but Not Heat?

In many U.S. electric dryer installations, the motor may still receive enough power to operate even when the heating circuit is not receiving its required supply.

Therefore, a rotating drum does not prove that the electrical supply is functioning correctly.

Can You Replace the Heating Element Yourself?

Heating element replacement may involve:

• Removing cabinet panels.
• Disassembling internal components.
• Handling electrical connections.
• Performing instrument-based testing.
• Checking thermal safety devices.

These procedures are outside the homeowner checks covered in this guide.

Contact a qualified appliance technician.

Gas Dryer Not Heating: What Could Be Wrong?

A gas dryer uses electricity for its controls, blower, and motor but produces heat through gas combustion.

Main Gas Heating Components

• Igniter: Helps initiate burner ignition.
• Flame sensor: Monitors conditions associated with ignition.
• Gas valve coils: Help control gas valve operation.
• Gas valve: Regulates fuel delivery to the burner.
• Burner assembly: Produces heat through combustion.
• Thermostats and thermal protection devices: Help regulate and limit temperatures.

A failure involving any relevant part of the system may prevent heating.

Could the Igniter Be Bad?

If the gas dryer tumbles normally, the external gas supply is available, and no heat is produced, a defective igniter is one possibility.

However, the same symptom may result from flame sensors, gas valves, coils, or electronic controls.

An igniter failure cannot be confirmed without appropriate technical diagnosis.

Can Gas Valve Coils Cause Intermittent Heating?

Yes.

On certain gas dryer models, faulty gas valve coils may cause heating to stop intermittently or fail altogether.

However, not every dryer that heats briefly and then cools has defective coils.

Airflow restrictions, thermal safety devices, and electronic controls may produce similar symptoms.

Can You Inspect the Burner Flame?

Do not remove dryer panels to observe the burner.

Never operate the dryer with safety covers removed.

Do not use matches, lighters, or other flames to investigate ignition problems.

Gas combustion and burner diagnosis must be performed by a qualified professional.

What to Do if You Smell Gas

The distinctive odor added to natural gas or propane is often described as smelling like rotten eggs.

Treat a suspected gas leak as an emergency.

If you suspect a gas leak:

• Leave the affected area or building immediately.
• Tell others to evacuate.
• Do not operate electrical switches.
• Do not turn electrical appliances on or off.
• Do not unplug electrical cords.
• Do not light matches, lighters, or other flames.
• Do not use a phone inside the suspected leak area.
• From a safe location, call emergency services, such as 911 in the United States, and the gas utility.
• Do not return until emergency responders or the gas utility confirm it is safe.

Never attempt to locate or repair a gas leak yourself.

Carbon monoxide (CO) is different from odorized fuel gas. Carbon monoxide has no smell.

An improperly installed or malfunctioning gas dryer may create a carbon monoxide exposure risk if combustion or exhaust problems occur.

Use carbon monoxide alarms in accordance with applicable safety recommendations.

If a CO alarm sounds or exposure is suspected, leave the building immediately and contact emergency services from a safe location.

Dryer Vent and Airflow Problems

Adequate airflow is essential for dryer performance and safety.

A conventional dryer must remove moisture from the clothes and exhaust it outdoors.

When airflow is restricted:

• Clothes may take longer to dry.
• Laundry may remain damp.
• The dryer may overheat.
• Thermal safety components may interrupt heating.
• Lint may accumulate.
• Fire risk may increase.

A restricted vent does not necessarily mean the heating element has stopped working.

Sometimes the dryer produces heat, but moisture cannot escape efficiently.

What Is a Dryer Vent?

The dryer vent is the system that carries warm, moist exhaust air from a conventional dryer to the outdoors.

It may include:

• The dryer's exhaust connection.
• A transition duct.
• Ductwork inside walls or ceilings.
• Elbows and connectors.
• An outdoor exhaust hood.

Signs of a Clogged Dryer Vent

Possible warning signs include:

• Clothes take much longer to dry.
• The dryer becomes unusually hot.
• The laundry room becomes excessively warm or humid.
• Airflow at the outdoor outlet appears weak.
• Vent-related error codes occur.
• Visible lint accumulates around openings.

How Should You Fix Restricted Airflow?

Start by cleaning the lint filter.

If an exhaust duct blockage is suspected, stop using the dryer and arrange appropriate cleaning.

Complete duct cleaning may require professional equipment, especially when ducts pass through walls, ceilings, or other inaccessible areas.

Never operate a gas dryer with its exhaust duct disconnected to test whether the dryer heats.

Operating a conventional electric dryer with the exhaust disconnected is also not recommended as a homeowner troubleshooting procedure.

Thermal Fuse, Thermostat, and Thermal Cut-Off Problems

Dryer heating systems use temperature controls and thermal safety devices.

Although their functions are related, these components are not necessarily interchangeable.

Thermal Fuse

A thermal fuse is a safety component that may interrupt part of the dryer's operation when certain temperature conditions occur.

Depending on the model, a failed or open thermal fuse may prevent heating or stop the dryer from operating entirely.

It is incorrect to assume that every dryer with a blown thermal fuse will continue tumbling normally.

High-Limit Thermostat

The high-limit thermostat is associated with controlling or responding to elevated temperatures.

A malfunction may affect heating or thermal protection, depending on the appliance's design.

Thermal Cut-Off

A thermal cut-off is another protective device used in certain dryer models.

It may open when abnormal temperature conditions occur.

Why Do These Components Fail?

One possible cause is overheating associated with restricted ventilation.

Other causes may also be involved.

Replacing a thermal safety device without correcting the cause of overheating can allow the problem to happen again.

Can You Bypass a Thermal Fuse?

No.

Never bypass, remove, or disable a thermal safety device to make a dryer heat.

These components must be evaluated and replaced according to manufacturer specifications.

Dryer Heats at First, Then Stops Heating

This symptom requires a different troubleshooting approach from a dryer that never heats.

Possible explanations include:

• Restricted airflow.
• A thermal protection device activating.
• Temperature sensor problems.
• Control system issues.
• An intermittent heating component.
• An ignition problem on gas dryers.
• Normal cycle operation.

Is the Dryer Supposed to Cycle Heat On and Off?

Yes.

Many dryers regulate temperature by switching heating on and off during operation.

Continuous heating throughout the entire cycle is not always necessary or expected.

When Might There Be a Problem?

If clothes remain wet, the cycle stops unexpectedly, or the dryer shows signs of overheating, a malfunction may be present.

Do not repeatedly test a dryer that has a burning smell, excessive heat, or a suspected vent blockage.

Record the symptoms and arrange service.

Heat Pump Dryers: Why They May Not Feel as Hot

Heat pump dryers use a different heating system from conventional electric dryers.

Air is heated, circulated through the laundry, and dehumidified through a condensation process.

These dryers generally operate at lower temperatures.

As a result, the drum or laundry may feel less hot even when the dryer is operating normally.

What to Check First

• Selected drying program.
• Lint filter.
• Additional filters.
• Accessible condenser or heat exchanger.
• Water collection reservoir.
• Condensate drainage system.
• Error codes.
• Installation conditions and room ventilation requirements.

Is It Normal for a Heat Pump Dryer to Have No Exhaust Vent?

Yes.

Many heat pump dryers are ventless, meaning they do not use a conventional outdoor dryer exhaust system.

This is part of their design.

Do not install or adapt external exhaust ductwork unless the manufacturer specifically requires it.

What if the Dryer Still Does Not Dry Clothes?

If the filters and other homeowner-serviceable components are clean but drying remains inadequate, the problem may involve:

• The compressor.
• Temperature sensors.
• Internal fans.
• The refrigerant system.
• Electronic controls.

These components require professional service.

Never open or attempt to repair the refrigerant circuit yourself.

Troubleshooting by Symptom

Possible Solutions

Safe Homeowner Checks

Depending on the dryer model, you may be able to:

• Check the selected drying cycle.
• Disable Air Only when heated drying is needed.
• Clean the lint filter.
• Reduce an overloaded laundry load.
• Look for accessible external vent blockages.
• Visually inspect the outdoor exhaust outlet.
• Check the circuit breaker under safe conditions.
• Record error codes.
• Identify the dryer type.
• Check safe external gas supply conditions only when no leak is suspected.
• Clean approved heat pump dryer filters.

Manufacturer-Approved Maintenance

Depending on the appliance, maintenance may include:

• Cleaning the lint screen.
• Removing debris from the accessible filter housing.
• Cleaning moisture sensors.
• Maintaining condenser filters.
• Emptying the water collection reservoir.
• Cleaning user-accessible condensation components.
• Performing installation checks described in the owner's manual.

Repairs That Require a Professional

Professional service may be necessary for:

• Heating element replacement.
• Igniter replacement.
• Flame sensor repairs.
• Gas valve coil diagnosis.
• Gas valve repairs.
• Thermal fuse or thermal cut-off replacement.
• Thermostat diagnosis.
• Heater relay or electronic control repairs.
• High-voltage electrical supply corrections.
• Heat pump system repairs.
• Internal cleaning that requires disassembly.
• Inaccessible ductwork or improper vent installations.

Dryer Fire Safety

Electrical and Gas Safety Precautions

How to Prevent Dryer Heating Problems

Clean the Lint Filter Regularly

Removing lint helps maintain airflow and drying performance.

Maintain the Dryer Vent

Arrange periodic inspection and cleaning according to the manufacturer's recommendations and the conditions of your installation.

Annual professional duct cleaning is a commonly recommended safety practice.

Avoid Overloading

Stay within the manufacturer's recommended capacity.

Choose the Right Cycle

Select temperatures appropriate for the fabric.

Watch for Longer Drying Times

Clothes taking much longer than usual to dry may indicate restricted airflow.

Maintain Proper Electrical Connections

Do not use improvised electrical connections, unsuitable adapters, or extension cords.

Maintain Gas Equipment Safely

Gas dryer installation and service should be performed by qualified professionals.

Follow Heat Pump Dryer Maintenance Instructions

Clean filters and accessible condensation components according to the owner's manual.

These practices support prevention but do not replace repairs to defective components.

How Much Does It Cost to Fix a Dryer That Is Not Heating?

Repair costs depend on the cause and the type of dryer.

Problems involving cycle selection, lint filter cleaning, or load size may be resolved without replacement parts.

A failed heating element, igniter, gas valve coil, thermostat, sensor, or electronic control may require parts and professional labor.

Additional costs may involve:

• Professional dryer vent cleaning.
• Household electrical repairs.
• Gas line service.
• Vent duct replacement.
• Heat pump system diagnosis.

Before approving repairs, ask about:

• The service call fee.
• Diagnostic charges.
• The confirmed cause.
• Required replacement parts.
• Labor charges.
• Repair warranty.
• Manufacturer warranty coverage.

Do not approve heating element or igniter replacement without a confirmed diagnosis.

Should You Repair or Replace a Dryer That Is Not Heating?

When to Call a Professional

Contact a qualified appliance technician if:

• The dryer still does not heat after basic checks.
• A failed heating element is suspected.
• The gas ignition system may be malfunctioning.
• A gas dryer does not heat despite an adequate supply.
• Heating is intermittent.
• The dryer overheats.
• The circuit breaker trips repeatedly.
• Error codes persist.
• A thermal safety component may have failed.
• The exhaust duct is blocked in an inaccessible location.
• The dryer produces a burning smell.
• Diagnosis requires service-panel removal.
• A heat pump dryer may have a compressor or refrigerant system problem.

If you smell gas or suspect a leak, leave the building and contact emergency services and the gas utility from a safe location.

Do not wait for a routine appliance service appointment.

Frequently Asked Questions

Related Guides

• Dryer Taking Too Long to Dry? Check These Causes
• Dryer Making a Loud Noise: Common Causes by Sound