Dryer Not Heating? Electric vs. Gas Checks You Can Safely Do
Sources checked: October 21, 2026. This guide summarizes the manufacturer pages linked at the end. CodeFix Home is independent of all appliance brands, and this guide has not been reviewed by a licensed appliance technician.
Quick answer
If an electric dryer tumbles but stays cold, first check that both breakers for the 240-volt circuit are on (reset both). If a gas dryer won’t heat, check that the gas shutoff valve is open. Then rule out simple causes: overloading, very wet clothes and a clogged lint screen or vent (these usually make drying slow rather than stopping heat completely). If none of that helps, the likely causes are parts such as the heating element or gas burner, a thermal fuse or wiring — Whirlpool lists these as technician repairs.
Safety first: do not open the dryer cabinet or test internal parts — electric dryers use 240 V, and gas dryers involve the gas supply. If you smell gas, do not operate any switches; leave and call your gas utility or 911 from outside. Safety disclaimer
Safe checks you can do (no tools)
| Check | Electric | Gas |
|---|---|---|
| Power supply | Needs 240 V. One tripped breaker can let the drum turn without heat — reset both breakers (or check fuses). | Plugged into a working 120 V outlet. |
| Fuel | — | Gas shutoff valve open (handle parallel to the pipe, per Whirlpool). Confirm other gas appliances work. |
| Cycle and settings | Make sure you didn’t select Air Dry/Air Fluff or a no-heat setting. | |
| Load | Whirlpool suggests filling the drum about ¾ full; very wet clothes (poor washer spin) take much longer. | |
| Lint and vent | Clean the lint screen every load and deep-clean it about every 6 months; check the vent. These usually reduce performance rather than stop heat entirely. | |
Not heating vs. getting too hot
Don’t confuse a cold dryer with an overheating warning. On Samsung dryers, codes hE and HC mean the dryer is getting too hot. Samsung’s steps are to clean the lint screen and vent; on electric models, have an electrician check for low voltage; and request service if the code continues. A dryer that overheats may shut off its heat to protect itself, which can look like “not heating”.
Common part failures (technician territory)
- Heating element (electric) or burner/igniter assembly (gas).
- Thermal fuse — a safety device that can open after overheating. If it fails, the underlying cause (often restricted airflow) also needs fixing.
- Wiring or power cord problems.
Whirlpool lists these as repairs for a qualified technician. Because a blown thermal fuse is often a symptom of airflow problems, have the vent checked at the same time — see how to clean a dryer vent.
When to call a professional
- Both breakers are on (or gas is on) and the dryer still produces no heat.
- The dryer heats briefly and then stops, or shows an overheating code that returns.
- You smell burning or gas, or see scorch marks.
- Breakers trip repeatedly when the dryer runs.
Related guides
- Dryer blocked-vent codes by brand
- How to clean a dryer vent
- Dryer vent length limits
- Find your model number
Official sources
- Whirlpool — Why is my dryer not heating? (checked Oct 21, 2026)
- Whirlpool — Dryer not drying or long dry times (checked Oct 21, 2026)
- Samsung US — Dryer error codes (checked Oct 21, 2026)
General information only; follow your owner’s manual. Featured image: illustration, not a photograph.
