Dryer Not Heating?

“Runs but won’t heat” is the most diagnosable complaint a dryer can have. The parts list is short, each failure leaves a distinct signature, and the root cause is very often twelve feet behind the machine. Repairly technicians fix the part and the reason it failed, with OEM parts on the truck and The Repairly Warranty — 1 year, parts and labor — behind the work.

What’s usually behind it

The vent, first and always. Los Angeles homes hide long vent runs — condos that snake ducts between units, hillside houses venting through the roof, garages where the transition hose got crushed behind the machine years ago. Restricted airflow makes a dryer overheat, and the machine responds by blowing its thermal fuse. The fuse is the symptom; the vent is the disease.

Electric dryers: the element and the fuse. Heating elements burn through like light bulb filaments, and thermal fuses fail permanently once overheated. There’s also the half tripped double pole breaker — the classic “it tumbles, so the power must be fine” trap. The drum motor and the element run on separate legs; one can be dead while the other spins happily.

Gas dryers: the ignition chain. The igniter glows, the gas valve coils open, the flame sensor confirms. Any link failing gives you a cold drum — weak coils are notorious for a dryer that heats for the first load and quits on the second, once everything warms up.

The cycling thermostat and sensors. The parts that meter heat can fail into “never call for heat.” Less common than the others, and exactly why the diagnostic tests the chain instead of swapping parts on a hunch.

What you can safely do right now

1. Clean the lint screen — properly. Screen out, lint off, and wash it if dryer sheets have glazed it (water should pass straight through).
2. Check the breaker once. Electric dryers: flip the double pole breaker fully off, then on, one time. Re-trips mean stop and call.
3. Test the exhaust outside. Run the dryer on air and feel the flap at the exterior vent. Strong steady flow is healthy; a weak breath — or a flap that never opens — is your answer.
4. Pull the machine forward. A kinked or crushed foil transition hose behind the dryer chokes everything. Straighten it gently; if it’s foil and flattened, it’s due for replacement anyway.

How the visit works

The $79 diagnostic tests the heating chain end to end and measures airflow — waived when you proceed with the repair, with a written estimate before any work begins. If the honest answer is that an old dryer isn’t worth the fix, you’ll hear that too; more often, a fuse, element, or coil set has it drying like new in a single visit.