Dryer Running but Not Heating? Safe Checks First

Quick answer

When your dryer is not heating but the drum still turns, the most common causes are a tripped breaker on an electric dryer, a no-heat setting, or a clogged lint screen or vent. Start at the breaker panel and the control settings, then check airflow. This guide is for beginners who want to rule out the simple things before calling a qualified technician.

Safety first

• Unplug the dryer, or switch off its circuit breaker if you can’t reach the plug safely, before you clean the lint screen area or the vent.
• Never remove the back or front panels, touch wiring, or try to test or replace heating parts. Those jobs belong to a professional.
• With a gas dryer, don’t pull the dryer out or touch the gas line or valve. If you smell gas (a rotten-egg odor), leave right away, don’t flip any switches, and call your gas utility or 911 from outside.
• If you notice a burning smell, smoke or scorch marks, stop using the dryer, unplug it if you can do so safely, and have it inspected before the next load.
• Keep a working carbon monoxide alarm near any gas appliance, including a gas dryer.

Before you begin

Take two minutes for the basics. Make sure the dryer is plugged in firmly and that the door closes and latches. Look at the cycle you chose: an “Air Fluff,” “Air Only” or “No Heat” setting tumbles clothes without warming them, and some delicate cycles use very little heat.

Find the model number on the rating label (often inside the door frame) so you can look up the manual. If you need help locating it, see how to find your appliance model number. Display codes vary by brand and model, so look any code up in the manual or on the manufacturer’s support site rather than guessing.

Possible causes

Things you can check yourself:

• Tripped breaker (electric dryers). Most electric dryers use a double breaker, which is two switches joined by a handle. If only half has tripped, the drum may spin while the heat stays off.
• No-heat or low-heat setting. An air-only cycle or a low temperature choice can feel like a broken heater.
• Clogged lint screen or vent. Poor airflow makes the dryer overheat inside, and safety devices can shut the heat off.
• Overloading. A packed drum can feel cool and damp for a long time.
• Gas supply turned off (gas dryers). If other gas appliances in the home aren’t working either, the issue may be the household supply, which is a call for your gas utility.

Problems that need a technician:

• A failed heating element, igniter, gas valve part, thermostat or thermal fuse
• Faulty wiring, a damaged power cord or a problem with the outlet
• A control board fault or error codes that keep coming back
• Any issue with the gas connection or gas line

Step-by-step checks for a dryer with no heat

1. Check the cycle and temperature. Choose a regular timed or sensor cycle with a medium or high heat setting and run it for a few minutes with a small load. Is the air warm now? If yes, the setting was the culprit. If not, go to step 2.
2. Look at the breaker panel (electric dryers). Open your home’s breaker panel and find the dryer breaker, usually a double breaker labeled “Dryer.” If it’s in the middle or off position, push it fully off and then back on. Don’t open the panel cover or touch any wiring. Did the heat return? If yes, keep an eye on it. If the breaker trips again, stop and call a qualified technician or electrician.
3. Clean the lint screen. With the dryer off, pull out the screen, roll the lint off with your fingers, and slide it back in. If it looks coated or water beads on it, wash it with warm soapy water and let it dry completely. Any change? If heat is back, make cleaning the screen a habit before every load. If not, continue.
4. Check the outside vent hood. Unplug the dryer first. Go outside and find the vent hood where the duct exits the house. The flap should open freely when the dryer runs and nothing should block it, such as lint, a bird nest, snow or plants. Clear only what you can reach from the outside. For a full how-to, see how to clean a dryer lint screen and vent safely.
5. Look at the visible duct. On an electric dryer, if the space allows, check the duct behind the dryer for kinks or a crushed section without moving the dryer far. On a gas dryer, leave the dryer where it is and ask a professional to check the duct. Is the duct crushed or full of lint? If yes, that blockage may be causing the problem.
6. Try a smaller load. Dry a half load of similar fabrics. Very heavy items like comforters can take much longer and feel cool partway through. Still no heat? Stop here and move on to the next section.

For a gas dryer, a household gas problem is possible if your stove or water heater also stopped working. Don’t try to relight anything or adjust valves; contact your gas utility.

When to stop and call a qualified technician

Call a qualified appliance technician, or use the manufacturer’s service network, if:

• You’ve checked settings, the breaker and airflow and the dryer still runs cold
• The breaker trips again after you reset it
• You notice a burning smell, smoke, sparks or a scorched cord or outlet
• It’s a gas dryer and the heat won’t come on, or you smell gas at any time
• An error code keeps coming back after you’ve looked it up in the manual
• The fix would require removing a panel or reaching internal parts

Heating parts, wiring and gas connections need trained hands and the right tools. Describing the steps you’ve already tried will help the technician.

FAQ

Why does my dryer spin but blow cold air?

On electric dryers, one half of a double breaker may have tripped, letting the motor run without heat. A no-heat setting or a blocked vent can also cause it. If those check out, a heating part may have failed, which is a job for a technician.

Can a clogged vent stop a dryer from heating?

Yes. When hot, damp air can’t escape, the dryer can overheat inside and safety devices may cut the heat. Cleaning the lint screen and clearing the outside vent hood is a good early step.

Is it safe to keep using a dryer that isn’t heating?

Running a few test minutes while you troubleshoot is generally fine, but don’t keep using it if you smell burning or the breaker keeps tripping. Lint is a fire risk, as the U.S. Fire Administration notes in its appliance fire safety tips.

What should I do if my gas dryer isn’t heating?

Check the settings, the lint screen and the outside vent hood. Don’t move the dryer or touch the gas line or valve. If those simple checks don’t help, or you smell gas, contact a qualified professional or your gas utility.

Where can I learn more about dryer care?

The dryers section has more guides on drying time and vent care. Your owner’s manual also lists the maintenance steps the manufacturer recommends for your model.