Dryer Repair / Symptom Guide
Dryer Not Heating — Causes & Safety Checks
A dryer that tumbles but doesn't heat is almost always one of three things: a blown thermal fuse from a clogged vent (most common), a failed heating element, or a bad thermostat. Each has a clear diagnostic step. Important: lint buildup is a fire hazard — fix this even if the dryer "works".
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Common Causes
1. Clogged dryer vent (causes thermal fuse to blow)
The #1 cause and the most dangerous. Lint accumulates in the vent over months/years, airflow drops, dryer overheats, and the thermal fuse trips for safety. Replacing the fuse without cleaning the vent will just trip it again — and lint fires are real.
2. Failed heating element (electric dryers)
The metal coil that produces heat burns out. Dryer runs the full cycle but produces no heat. Element costs $40–$80; awkward but accessible repair.
3. Igniter or gas valve coils (gas dryers)
Gas dryers need a small igniter to light the gas. When it fails, you smell faint gas for 1-2 minutes, then the gas safety shuts off. No heat. Igniter is ~$30 part.
4. High-limit thermostat
Safety thermostat that trips when the dryer overheats. Usually a symptom of the same vent-clog problem as the thermal fuse.
5. Cycling thermostat or control board
Less common. The cycling thermostat tells the heating element when to turn on/off. When it fails open, no heat at all.
What You Can Check Yourself
Try these in order — most take 5-10 minutes and many resolve the problem without a service call.
- 1
Clean the lint screen and vent (do this first)
Remove and clean the lint screen between every load — most users don't scrub it. Then disconnect the vent hose at the back of the dryer and clean both the hose and the wall vent. Use a vent-cleaning brush ($20 at hardware store) for the wall duct. This alone fixes ~40% of "no heat" calls and prevents fire.
- 2
Check the outside vent flap
Go outside, find the vent hood on your wall or roof. The flap should open easily when the dryer is running. If it's jammed by lint or a bird nest, airflow is blocked.
- 3
Run a no-heat test cycle
Many dryers have a "Air Fluff" or "No Heat" setting. Run that to confirm the motor still turns the drum normally. If yes, electrical/heating side is the issue. If drum also won't tumble, different problem (belt, motor).
- 4
Check the gas supply (gas dryers)
Make sure the gas valve behind the dryer is fully open. If your gas range works, gas is fine. If both range and dryer have gas issues, call gas company.
- 5
Look for error codes
Modern dryers display fault codes. Look up the code in the manual or online — many "no heat" codes point directly to the failed component.
When to Call a Pro
- →Vent is clean but dryer still doesn't heat
- →Burning smell during operation (stop immediately — fire risk)
- →Gas smell during cycle (turn off gas valve and call us, do not run dryer)
- →Cycle takes 2x longer than it used to even though clothes do dry — vent partially clogged, replace before fire risk grows
Typical cost
$60 diagnostic. Thermal fuse / thermostat $120–$180. Heating element / igniter $180–$300. Vent cleaning often bundled.
Service Areas
We provide dryer repair service in Calabasas, Woodland Hills, Thousand Oaks, West Hills, Agoura Hills, Hidden Hills, Simi Valley, Canoga Park, Chatsworth, Topanga, Westlake Village, Oak Park, and Newbury Park, and nearby communities throughout the West San Fernando Valley.
Need a Pro Now?
Local technician, same-day service in most of LA County. $60 diagnostic credited toward your repair. 30-day warranty on every fix.