Dryer Not Heating? Common Causes and Fixes

Your clothes come out just as wet as they went in, even though the drum is spinning. A dryer that runs but doesn't heat is one of the most common appliance problems. The good news is that the cause is often a single inexpensive part, though finding it takes some care.

Start with the simple checks

Before assuming a part has failed, rule out these:

• The settings. Make sure the dryer isn't on "air fluff" or a no-heat cycle.
• The lint screen. Clean it before every load.
• The vent. A crushed, kinked, or clogged vent traps heat and moisture and can trigger safety cutoffs.
• The breaker (electric dryers). Electric dryers use a 240-volt circuit with a double breaker. If one half trips, the drum may spin but the heat won't work. Reset it fully.
• The gas supply (gas dryers). Confirm the gas valve behind the dryer is open and other gas appliances work.

Common causes in electric dryers

If the basics check out, these parts are frequent culprits:

1. Thermal fuse. This safety device blows if the dryer overheats, often because of a clogged vent. On many models, a blown thermal fuse stops the heat, and on some it stops the whole dryer.
2. Heating element. The coil can break, especially as it ages.
3. High-limit thermostat. This shuts off heat if the temperature gets too high. If it fails, it may stay open.
4. Cycling thermostat. This controls normal operating temperature. A failed one can cut the heat.
5. Control board or timer. Less common, but possible.

Common causes in gas dryers

Gas dryers share some parts with electric dryers, like thermal fuses and thermostats. They also have their own:

1. Igniter. It glows to light the gas. A worn igniter may not get hot enough.
2. Flame sensor. If it doesn't detect heat properly, the gas valve may shut off.
3. Gas valve coils. These open the valve. When they weaken, the dryer may light briefly and then go out.

The vent: the hidden cause

A restricted vent is one of the most important things to fix, even if a part has failed. Poor airflow makes the dryer run hotter and longer. That can blow thermal fuses repeatedly, wear out elements, and create a fire risk.

To keep the vent clear:

• Clean the full vent run periodically, from the dryer to the outside
• Use rigid or semi-rigid metal duct, not flimsy foil or plastic
• Keep the duct as short and straight as practical
• Check that the outside vent flap opens freely when the dryer runs

If a thermal fuse has blown, replace it and fix the airflow problem. Otherwise the new fuse may blow again.

Safety and the repair decision

Safety first

Always unplug an electric dryer before opening it. For a gas dryer, shut off the gas and unplug it. If you smell gas, leave the house and call your gas utility from outside. Testing parts with a multimeter is common for DIYers, but if you're not comfortable, call a qualified appliance technician.

Repair or replace?

Most no-heat repairs involve relatively affordable parts. Replacement makes more sense if the dryer is old, has several problems, or needs a costly control board. Ask the technician for a written diagnosis and estimate.

Is it covered by a home warranty?

Clothes dryers are commonly included in appliance and combo home warranty plans. Coverage usually applies to mechanical failures from normal use. Check for:

• Exclusions for vent cleaning or venting issues
• Coverage limits for the appliance
• Whether gas line repairs are included
• How replacements are handled if the dryer can't be repaired

See typical terms on our clothes dryer coverage page and compare with washer coverage.

How Warranty Wizards can help

We help you compare home warranty plans from third-party providers and explain what each covers for laundry appliances before you buy. For your options, get a free quote at /get-a-quote/.