Dryer Not Heating? Common Causes and What You Can Check

An electric dryer that runs but gives no heat is one of the most common laundry problems. The drum turns, the timer counts down, and the clothes come out damp and cool. That pattern tells us the motor and controls are working, and the problem is somewhere in the heating side of the machine.

Most cases come down to a handful of parts: the heating element, a safety fuse or thermostat, a sensor, a control board, or the power supply to the dryer. Airflow matters too, because a dryer that cannot breathe out will protect itself by switching its heat off.

What you can safely check first

If your dryer runs on gas, stop here: gas dryers need a licensed gas technician. We repair electric dryers only. You can tell an electric model by its thick, four-prong or three-prong plug and a large outlet, with no gas line at the back.

• Check the breaker panel. An electric dryer uses a double breaker, and one half can trip while the drum still turns, which means the motor runs but there is no heat.
• Make sure the plug is fully seated and the cord is not crushed behind the machine.
• Choose a heated setting. Air fluff, damp-dry or a delicate low-heat cycle can feel cool by design.
• Clean the lint screen after every load, and wash it with warm soapy water now and then, since fabric softener leaves a film that blocks airflow.
• Pull the dryer out gently and look at the vent hose. A crushed or kinked hose, or one packed with lint, restricts airflow.
• Check outside where the vent exits. The flap should open freely when the dryer runs.
• Try a smaller load. An overstuffed drum can dry poorly even when the heat works.

Common causes

A restricted vent

A blocked or crushed vent is a frequent reason the heat safety parts trip. Hot, moist air has nowhere to go, the dryer overheats, and a thermal fuse or thermostat shuts the heat down to prevent a fire. If your clothes had been taking longer and longer to dry before the heat stopped, the vent is a prime suspect. Our guide on dryer vent fire risk and slow drying explains what to look for. A technician will clear the cause of the restriction, because replacing a tripped part without fixing the vent just lets it fail again.

A failed heating element

The element is a coil of resistance wire, much like the element in a toaster. Over time it can burn through or break. The dryer then tumbles normally but never warms up. A technician tests the element for continuity and replaces it if it has failed.

A blown thermal fuse or tripped thermostat

These small safety parts cut power to the heat when temperatures climb too high. A thermal fuse works once and has to be replaced. A thermostat may reset on its own, which can cause heat that comes and goes. Both are inexpensive parts in general, but the reason they tripped needs to be found.

A faulty sensor or control

Dryers read temperature and moisture to decide when to heat and when to stop. A failed sensor, a worn timer or a damaged control board can leave the heating circuit switched off. The signs are often inconsistent behaviour, such as heat on some cycles and not others.

Only half the power reaching the dryer

Electric dryers need two live legs of power. If one is lost at the breaker, the outlet or the cord, the controls and motor can still run while the element gets nothing. A technician can test the outlet and the supply safely.

When to call a technician

Call if the breaker is fine, the lint screen and vent are clear and there is still no heat. Call right away if you smell burning, see scorched marks, or the breaker trips repeatedly. Do not keep running a dryer that overheats or trips, and do not try to bypass a safety part.

Still not working? Book a dryer repair and tell us the model number and what you have checked.

Related

• Appliance repair service page
• Dryer vent fire risk and slow drying
• Appliance error code guides