Dryer Not Heating? Step-by-Step Troubleshooting Guide

A dryer that runs but does not heat is one of the most frustrating appliance problems a homeowner can face. The drum spins, the motor hums along, and the cycle finishes on time, but your clothes come out just as damp as when they went in. If your dryer is not getting hot, the good news is that the cause is usually a single failed component, and most of those parts are inexpensive.

At 911 Appliance Repair, we have been fixing dryers in San Diego since 1991. A dryer not heating is one of the most common service calls we get, and we stock the parts needed to fix it on the first visit for most major brands. This guide walks you through every common cause, step-by-step diagnosis for both electric and gas dryers, brand-specific notes, and clear advice on when to stop and call a professional.

Whether you want to troubleshoot it yourself or just understand what might be wrong before you pick up the phone, this guide covers it all.

TL;DR: A dryer not heating is usually caused by a blown thermal fuse, a broken heating element, a faulty thermostat, or a clogged vent. Electric dryers need 240 volts to heat, so check both sides of the breaker first. Gas dryers need a working igniter and gas valve solenoids. If you are in San Diego, 911 Appliance Repair offers same-day dryer repair for all major brands.

Common Causes of a Dryer Not Heating

Before diving into step-by-step diagnosis, it helps to understand what parts can fail and why. A dryer not drying clothes almost always traces back to one of the following nine causes.

Faulty Heating Element (Electric Dryers)

The heating element is a coiled wire that glows red hot and warms the air inside an electric dryer. Over time, the coil can break, burn out, or short against the metal housing. When that happens, the dryer runs and tumbles but produces zero heat. This is the single most common cause of an electric dryer not heating, and you can learn more about replacement costs in our guide to the cost to replace a dryer heating element.

Blown Thermal Fuse

The thermal fuse is a one-time safety device that cuts power to the heating element if the dryer overheats. Once it blows, the dryer will run but will not heat. A clogged dryer vent is the most common reason a thermal fuse blows, because restricted airflow causes temperatures to spike. Always find and fix the root cause before replacing the fuse, or the new one will blow again.

Malfunctioning High-Limit Thermostat

The high-limit thermostat is another safety switch that shuts off the heater if the dryer gets too hot. Unlike the thermal fuse, the high-limit thermostat is designed to reset as the dryer cools. But if it fails in the open position, it permanently cuts power to the heating element and the dryer runs but no heat is produced.

Defective Cycling Thermostat

The cycling thermostat regulates the dryer’s temperature by turning the heating element on and off to maintain a target heat range. If it fails, the dryer may not heat at all, or it may heat continuously and overheat. This is less common than a blown fuse or broken element, but it does happen, especially on older machines.

Bad Gas Valve Solenoids (Gas Dryers)

Gas dryers use electromagnetic solenoid coils on the gas valve to open and allow gas to flow to the burner. These coils can weaken over time and fail to open the valve, especially after the dryer has been running for a few minutes. If the igniter glows but the burner never lights, the gas valve solenoids are the prime suspects. Our gas dryer not heating guide covers this in more detail.

Failed Igniter (Gas Dryers)

The igniter lights the gas in a gas dryer. It can crack, burn out, or fail electrically. If the igniter does not glow at all when the dryer starts, the gas valve will never open and the dryer will not heat. The igniter is one of the most common gas dryer heating failures.

Broken Flame Sensor (Gas Dryers)

The flame sensor detects whether the burner has lit and signals the gas valve to stay open. If the flame sensor fails, the gas valve may open briefly and then shut off, or never open at all. This produces a dryer that runs but never builds heat.

Clogged Vent or Lint Filter Restricting Airflow

A clogged dryer vent is the most overlooked cause of heating problems. When lint builds up in the vent or the lint filter housing, airflow is restricted. The dryer takes longer to dry clothes, temperatures climb, and eventually the thermal fuse blows or the high-limit thermostat trips. Even a partially clogged vent can cause a dryer not heating properly. If your dryer is also taking excessively long to dry, see our guide on why your dryer takes forever to dry clothes.

Tripped Circuit Breaker (Electric Dryers Need 240V)

Electric dryers run on 240 volts, which means they use a double-pole circuit breaker. The motor runs on 120 volts (one half of the breaker), but the heating element needs the full 240 volts (both halves). If one side of the breaker trips, the dryer will run and tumble but will not heat. This is the simplest fix of all and requires no parts.

Electric Dryer Not Heating: Step-by-Step Diagnosis

If you have an electric dryer that runs but produces no heat, work through these steps in order. Always unplug the dryer before opening any panels, and never test live circuits unless you are trained and comfortable working with household voltage.

Check the Circuit Breaker (Both Halves of the Double-Pole Breaker)

Start at your electrical panel. Electric dryers use a double-pole breaker, which means two breakers are linked together. If one trips, the dryer motor will still run on 120 volts but the heating element will not get the 240 volts it needs. Look for a breaker that is in a middle or partially tripped position. Turn it fully off, then back on. If it trips again immediately, you may have a short circuit in the dryer or the power cord, and you should call a professional.

Test the Heating Element for Continuity

Unplug the dryer and access the heating element. On most dryers, it is behind the lower front panel or the rear access panel. Visually inspect the heating coil for visible breaks or scorch marks. Then set your multimeter to the continuity or resistance setting and touch the probes to the two terminals on the element. A good element will show a low resistance reading, typically 10 to 50 ohms. If the meter shows infinite resistance (open circuit), the element is broken and must be replaced.

Check the Thermal Fuse

Locate the thermal fuse, usually on the blower housing or mounted near the heating element. Disconnect the wires and test the fuse with your multimeter set to continuity. If you get a beep or a near-zero resistance reading, the fuse is good. If there is no continuity, the fuse is blown. Replace it, but also inspect the dryer vent for clogs before putting the dryer back together. A blown thermal fuse without a clogged vent may indicate a failed high-limit thermostat.

Test the High-Limit Thermostat

The high-limit thermostat is usually mounted on the heating element housing. Disconnect the wires and test it with your multimeter at room temperature. It should show continuity. If it shows no continuity, it has failed in the open position and must be replaced. Like the thermal fuse, a failed high-limit thermostat often points to an airflow problem, so check the vent.

Inspect the Cycling Thermostat

The cycling thermostat is typically on the blower housing. Test it with your multimeter for continuity at room temperature. Some cycling thermostats have three or four terminals, so consult the wiring diagram on your dryer (usually found inside the control panel or behind the lower front panel) to identify the correct terminals. If the cycling thermostat shows no continuity on the main contacts, replace it.

Verify Proper Airflow and Vent Condition

Even if every electrical component tests fine, poor airflow can prevent a dryer from heating properly or cause repeated failures. Disconnect the vent hose from the back of the dryer and check for lint buildup. Go outside and check the exterior vent cap to make sure it opens fully when the dryer runs and is not blocked by debris, lint, or animal nests. If the vent runs through walls or is longer than 10 feet, consider having it professionally cleaned.

Gas Dryer Not Heating: Step-by-Step Diagnosis

Gas dryers have a completely different heating system. Instead of an electric heating element, they use a burner assembly with an igniter, a flame sensor, gas valve solenoids, and a gas burner. If your gas dryer runs but does not heat, follow these steps.

Safety warning: Gas dryers involve natural gas or propane. If you smell gas at any point, leave the area, do not operate electrical switches, and call your gas utility company immediately. Never attempt to repair a gas valve or gas line yourself. That work requires a licensed professional.

Check the Gas Supply Valve Is Open

Before disassembling anything, verify that the gas supply valve behind the dryer is fully open. The valve handle should be parallel to the gas pipe. If it is perpendicular, the valve is closed and no gas is reaching the dryer. This is a simple oversight that causes many no-heat calls. Also confirm that other gas appliances in your home are working, which rules out a broader gas supply issue.

Test the Igniter

Unplug the dryer and shut off the gas supply. Access the burner assembly, usually through the lower front panel. The igniter is a flat or round ceramic component at the end of the burner tube. Test it with your multimeter for continuity. A good igniter will show a resistance of 50 to 400 ohms depending on the model. If it shows no continuity, the igniter is broken and must be replaced. You can also watch the igniter during a cycle: if it never glows, it has failed.

Check the Flame Sensor

The flame sensor is a small metal bracket with a window, mounted near the burner. It detects the flame and tells the gas valve to stay open. Test it with your multimeter for continuity. If it shows no continuity, replace it. A failing flame sensor can also cause the burner to light briefly and then shut off, which produces intermittent heat.

Test the Gas Valve Solenoids (Coils)

The gas valve solenoids are the two or three cylindrical coils sitting on top of the gas valve. These are a very common failure point on gas dryers. They can test fine with a multimeter at room temperature but still fail once they heat up during a cycle. The classic symptom is a dryer that heats for the first 10 to 15 minutes and then stops heating. Watch the burner through the observation window: if the igniter glows, then turns off, and the burner never lights, the solenoids have failed. Replace both solenoids as a set, even if only one appears bad.

Inspect the High-Limit Thermostat

Gas dryers also have a high-limit thermostat on the burner assembly. Test it with your multimeter for continuity at room temperature. If it shows no continuity, it has failed open and is preventing the burner from operating. Replace it and check the vent for clogs, since overheating is the usual cause of failure.

Dryer Vent Issues That Cause Heating Problems

Dryer vent problems deserve their own section because they are both the most common root cause of a dryer not heating and the most dangerous. Here is how the chain of failure works.

When lint accumulates in the vent, the flexible hose behind the dryer, or the rigid duct inside the wall, airflow drops. The heating element or burner still produces heat, but the warm, moist air cannot escape. Temperatures inside the dryer climb rapidly. The high-limit thermostat trips to protect the dryer, and if temperatures keep rising, the thermal fuse blows permanently. The result is a dryer that runs but produces no heat.

This is why replacing a blown thermal fuse without cleaning the vent is a mistake. The new fuse will blow again, sometimes within a single load. Always trace the root cause.

The fire safety aspect cannot be overstated. The U.S. Fire Administration reports that clothes dryers cause thousands of home fires each year, and the leading cause is failure to clean the dryer vent. Lint is highly flammable. If you have not cleaned your dryer vent in the last year, or if your vent runs through walls or is longer than 10 feet, schedule a professional vent cleaning. In San Diego’s older neighborhoods like North Park, Hillcrest, and Pacific Beach, many homes have long vent runs that are especially prone to buildup.

Brand-Specific Dryer Heating Issues

Different dryer brands have different failure patterns. Here are the most common heating problems we see for each major brand.

Whirlpool Dryer Not Heating

Whirlpool dryers most commonly stop heating due to a blown thermal fuse on the blower housing. The heating element can also fail, especially on older models. Whirlpool dryers are generally straightforward to diagnose. For detailed steps, see our Whirlpool dryer not heating guide.

LG Dryer Not Heating

LG dryers use a heating element inside the cabinet, and the most common cause of heating failure is a broken element or a faulty thermistor. LG dryers may display error codes tE1 or tE2 when the thermistor fails. See our LG dryer not heating guide for model-specific diagnosis.

Samsung Dryer Not Heating

Samsung dryers commonly fail to heat due to a broken heating element mounted on the front of the dryer. Lint accumulation in the element housing causes overheating and element breakage. Samsung dryer error codes for heating problems include tE1, tE2, and tE5. Our Samsung dryer not heating guide covers these in detail.

GE Dryer Not Heating

GE dryers most commonly stop heating due to a broken heating element or a blown thermal fuse. GE dryers with dual heating elements can fail on one element, which means the dryer still heats but takes much longer to dry. For GE-specific service, see our page on GE dryer repair in San Diego.

Maytag Dryer Not Heating

Maytag dryers commonly fail to heat due to a blown thermal fuse, a broken heating element, or a faulty cycling thermostat. Maytag dryers with the IntelliDry moisture sensor can also fail if the sensor strips are dirty or damaged. See our Maytag dryer not heating guide for more.

When to Call a Professional for Dryer Repair

Some dryer heating problems are safe and straightforward to diagnose yourself, especially on electric dryers if you own a multimeter and are comfortable following safety procedures. But there are clear points where DIY stops being a good idea.

Call a professional if:

• You have a gas dryer and suspect a gas valve, igniter, or flame sensor problem. Gas components require specialized training and tools, and a mistake can create a gas leak or fire hazard.
• You replaced the thermal fuse and it blew again. This means there is a deeper airflow or thermostat problem that needs professional diagnosis.
• Your dryer vent runs through walls, through the attic, or is longer than 10 feet. These vents require professional cleaning tools to fully clear.
• You do not own a multimeter or are not comfortable testing electrical components. Guessing at parts gets expensive fast.
• You want the repair done quickly with a warranty.

At 911 Appliance Repair, we offer same-day dryer repair in San Diego for all major brands. Our technicians stock common dryer parts on their service trucks, so most heating repairs are completed in a single visit. Every repair is backed by a 1-year warranty on parts and labor, and our $49.95 house call is free when you approve the repair. If you need dryer repair near you in San Diego, call us at 800-929-1192.

Frequently Asked Questions

Why is my dryer spinning but not heating?

The most common causes of a dryer spinning but not heating are a blown thermal fuse, a broken heating element, a faulty high-limit thermostat, or a clogged dryer vent. On electric dryers, a tripped circuit breaker is also a frequent cause, since the motor runs on 120 volts but the heating element needs 240 volts. On gas dryers, a failed igniter or bad gas valve solenoids are common culprits. Start by checking the breaker and the vent, then test the thermal fuse and heating element with a multimeter.

How do I know if my dryer heating element is bad?

Test the heating element with a multimeter set to the continuity or resistance setting. A good element will show a low resistance reading, typically 10 to 50 ohms. If the meter shows infinite resistance or no continuity, the element is broken. You can also visually inspect the heating coil for visible breaks or scorch marks. On electric dryers, the heating element is usually behind the lower front panel or the rear access panel. Always unplug the dryer before accessing it.

Can a clogged dryer vent cause the dryer not to heat?

Yes. A clogged vent restricts airflow, causing the dryer to overheat. This blows the thermal fuse or trips the high-limit thermostat, which shuts off the heating element. The result is a dryer that runs but produces no heat. Always clean the vent before replacing a blown thermal fuse, or the new fuse will blow again. A clogged dryer vent is also a serious fire hazard and should be cleaned at least once a year.

How much does it cost to fix a dryer that is not heating?

Most dryer heating repairs cost between $120 and $300 depending on the failed part. A thermal fuse replacement costs $120 to $200, a heating element replacement costs $150 to $300, and a thermostat replacement costs $120 to $250. Gas valve solenoids and igniters typically cost $130 to $280 for the full repair. At 911 Appliance Repair, our $49.95 house call is free when you approve the repair, and every repair includes a 1-year warranty on parts and labor.

Is it worth repairing a dryer that is not heating?

In most cases, yes. The most common fixes, such as a thermal fuse, heating element, or thermostat, cost $120 to $300. That is far less than buying a new dryer, which typically costs $500 to $1,200. If your dryer is less than 10 years old and the repair costs less than half the price of a new unit, repair is the better financial choice. If your dryer is over 12 years old or has had multiple recent failures, replacement may make more sense. You can compare options in our guide to the most reliable dryer brands.

Can I fix my dryer not heating myself?

You can safely diagnose and repair some electric dryer heating problems yourself if you own a multimeter and are comfortable following electrical safety procedures. Checking the circuit breaker, cleaning the lint filter, and inspecting the vent are all safe DIY tasks. However, testing and replacing internal components requires unplugging the dryer, removing panels, and working with wiring. Gas dryer repairs involving the igniter, gas valve solenoids, or flame sensor should be left to a professional due to the safety risks of working with gas. If you are unsure at any point, call a qualified technician.