How to Diagnose and Fix a Dryer That Won't Heat

Why Is My Dryer Not Heating?

A dryer that tumbles but won't heat is one of the most common appliance problems homeowners face. The good news is that in most cases, the fix is straightforward and affordable. Before you call a repair technician or start shopping for a new dryer, let's walk through the most likely causes and how to fix them yourself.

Most Common Causes of a Dryer Not Heating

1. Burned-Out Heating Element

The heating element is a coil of wire inside a metal housing that heats the air inside the dryer drum. Over time, this element can burn out or develop breaks in the coil. This is the single most common reason a dryer stops heating. Replacement heating elements typically cost between $20 and $50, and most homeowners can replace one in under an hour.

How to check: Use a multimeter to test for continuity. If the element doesn't show continuity, it needs to be replaced.

2. Blown Thermal Fuse

The thermal fuse is a safety device that shuts off the dryer's heat if the exhaust temperature gets too high. Once blown, it doesn't reset — it must be replaced. A clogged vent is usually the root cause, so always clean your dryer vent when replacing a thermal fuse.

Where to find it: The thermal fuse is usually located on the blower housing or near the heating element. It's a small, flat device about 1 inch long.

3. Faulty Gas Valve Solenoid (Gas Dryers)

If you have a gas dryer, the gas valve solenoids open the gas valve to allow gas to flow to the burner. These solenoids can fail intermittently — your dryer may heat for a few minutes, then stop. Replacing the solenoids is usually sold as a kit and costs around $15-$25.

4. Defective Igniter (Gas Dryers)

The igniter glows hot to ignite the gas in the burner assembly. If the igniter is weak or burned out, the gas won't ignite and the dryer won't heat. You can visually inspect the igniter — if it glows but doesn't ignite the gas, the solenoids may be the issue instead.

5. Broken Thermostat or Cycling Thermostat

The cycling thermostat regulates the dryer temperature by cycling the heat on and off. If it fails, the dryer may not heat at all or may overheat. Like the heating element, test it with a multimeter for continuity.

Step-by-Step Diagnosis

1. Check the basics first: Make sure the dryer is plugged in to a working outlet (electric dryers need a 240V outlet), the gas is turned on (gas dryers), and the dryer is set to a heat cycle (not air fluff).
2. Inspect the lint filter and vent: A clogged vent restricts airflow and can cause the thermal fuse to blow. Clean the lint filter before every load and deep-clean the vent duct at least once a year.
3. Test the thermal fuse: Unplug the dryer, locate the thermal fuse, and test it with a multimeter. No continuity means it's blown.
4. Test the heating element: Access the heating element (usually behind the back panel or under the drum) and test for continuity.
5. Check the thermostat: Test the cycling thermostat and high-limit thermostat for continuity.

How to Replace a Dryer Heating Element

Replacing a heating element is one of the most common DIY appliance repairs. Here's a general overview:

1. Unplug the dryer and pull it away from the wall.
2. Remove the back panel (most dryers) or the front panel.
3. Disconnect the wires from the old heating element.
4. Remove the mounting screws and take out the old element.
5. Install the new element and reconnect the wires.
6. Reassemble the dryer and test it.

When to Call a Professional

If you've tested all the components above and still can't find the problem, or if you're not comfortable working with electrical components or gas lines, it's time to call a qualified appliance repair technician. Gas dryer repairs in particular should be handled carefully due to the risk of gas leaks.

Find the Right Replacement Part

Search your dryer's model number at PartsDiscount.com to find the exact heating element, thermal fuse, or thermostat for your specific dryer model — with fast shipping and competitive prices.