Dryer Runs but Has No Heat? A Diagnostic Starting Point
When the drum turns but clothes stay cold and damp, the fault might involve household power, heating controls, airflow protection or a gas ignition system. Electric and gas dryers require different checks.
What to check first
Identify electric versus gas
An electric dryer typically uses a higher-voltage heating circuit than its motor and controls. A gas model uses an ignition and gas-valve sequence. Confirm the appliance type before following any troubleshooting path.
Ask what changed
Did the dryer stop heating suddenly, heat intermittently or take progressively longer to dry? An intermittent problem suggests a different pattern from one in which heat is entirely absent.
Consider air restrictions first
Restricted exhaust airflow can cause thermal safety devices to open and may create a fire hazard. Inspect the accessible lint path and external vent as directed by the manufacturer, and stop using equipment that overheats.
Know when electrical supply matters
An electric dryer may run its motor while missing the required supply for heating. Qualified technicians should verify the correct supply and connections using safe procedures rather than assuming a failed heater.
Treat gas ignition separately
A gas dryer has safety interlocks and a specific ignition sequence. Do not attempt improvised ignition or bypass gas controls. Abnormal ignition, gas odor or suspected leakage requires stopping use and obtaining qualified service.
Learn the full diagnostic workflow.
Our dryer repair course covers how the appliance operates, system-by-system troubleshooting, typical failures and lesson knowledge checks.
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