From the Blog

Dryer Not Heating: Fuses, Elements, Igniters, and the Vent Behind It All

No-heat dryer calls split into a short list of testable causes, and one of them, your vent, decides whether the fix lasts.

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Technician testing a dryer heating element with a multimeter

A dryer with no heat has lost one link in a chain: power to the heater, the heating element or gas igniter, or one of the thermal safety devices that cut heat when temperatures climb. The most misunderstood link is the thermal fuse: it usually blows because airflow was poor, so replacing it without checking the vent sets up a repeat failure.

Electric and gas dryers fail differently

On an electric dryer, the chain is the element itself, a high-limit thermostat, a cycling thermostat, and the thermal fuse. One open link means no heat, and each is testable for continuity in minutes. A dryer can also lose heat on one leg of its 240-volt supply: it will tumble happily on 120 volts and never warm up, which fools a lot of owners and a few handymen.

On a gas dryer, watch the burner through the inspection hole if yours has one. An igniter that glows and fades without flame points to weak gas valve coils; no glow points to the igniter or its circuit. Gas work past the igniter belongs to a technician, full stop.

The vent is part of the diagnosis

Every no-heat dryer call we run in Thompson's Station includes an airflow check at the outside hood, because restricted vents are behind a large share of blown fuses and cooked elements. Long roof runs in two-story subdivisions like Fields of Canterbury and Tollgate Village collect lint until the dryer cooks its own safety devices.

Stand outside while the dryer runs. You should feel a strong, warm blast. A weak sigh of air means the vent needs cleaning regardless of which part failed inside. Our dryer vent cleaning page covers that service, and our dryer repair page covers the heat circuit testing.

What not to do

Do not bypass a thermal fuse 'to test.' It is a one-time safety device standing between a hot dryer and a lint fire, and a dryer run with it jumped is a dryer running without its fireguard. Do not run repeated cycles hoping it heals, and do not trust a part swap based on a video for a different model; thermal layouts vary.

What you can do: confirm the breaker is fully on (flip it off and on once), check the lint trap and the outside hood for blockage, and note whether the failure followed a storm, which in Williamson County points at the control or power side. Then call with the model number ready.

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We service these brands and many more. Not sure about yours? Call (615) 583-1836 or see our full brands page.

Frequently Asked Questions

Intermittent heat often means gas valve coils weakening as they warm up, a cycling thermostat drifting, or vent airflow that collapses when lint shifts. Note the pattern, first load fine, later loads cold is a classic coil story, and tell us when you book.

It is a safety part, not a wear part. It blows because something made the dryer too hot, most often airflow. A fuse replacement that skips the cause is a countdown to the same call.

Power, breaker, lint trap, outside airflow, and the dryer's heat settings (a 'no heat' air-fluff cycle selected by accident embarrasses someone every month). Past that, the chain needs a meter.

Not for an electric dryer. Tumbling runs on one leg of the supply; heating needs both. A half-tripped breaker is a real and common cause, which is why the off-and-on reset is worth doing once.

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An Appliance Down in Thompson's Station?

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