Dryer Not Heating? Gas vs. Electric Causes (and What to Check First)

A dryer that runs — drum turning, timer counting down — but produces no heat is one of the most common calls we get across Los Angeles. The fix depends entirely on whether you have a gas or electric dryer, because the two fail in completely different ways.

First: Confirm It’s Actually a Heat Problem

Before assuming the worst, rule out the obvious. Check that:

• The dryer isn’t overloaded (a stuffed drum takes longer to dry and can feel like a heat problem)
• The lint trap is clean
• A helper hasn’t accidentally set the cycle to “Air Fluff” or “No Heat” — it happens more than you’d think

If clothes are coming out cold and the lint trap is clean, move on to fuel-specific diagnosis.

Electric Dryers: The Heating Element Is the Usual Suspect

An electric dryer heats using a coiled resistance wire — essentially a giant light bulb filament that heats the air passing over it. Like any filament, it eventually breaks.

How to tell: The dryer runs normally in every other respect. Drum turns, timer advances, everything sounds fine — just no heat, ever, on any cycle.

What’s actually happening: The element has an open circuit somewhere in the coil. A multimeter test across the element terminals confirms it instantly — no continuity means it’s dead.

The catch: If the element burned out, something usually caused it to overheat first — most often a failing thermostat or thermal fuse that didn’t cut power in time. Replacing the element alone without checking these components is how you end up with the same failure again in a few months.

Gas Dryers: It’s Almost Always the Igniter

Gas dryers heat through a burner assembly, and the igniter is the component under the most stress. It glows orange to light the gas, and a flame sensor confirms ignition before holding the gas valve open.

How to tell: Listen closely at the start of a cycle. If you hear a faint clicking or humming from the back of the dryer followed by silence — no whoosh of ignition — the igniter is likely too weak to light the burner.

What’s actually happening: Like an oven igniter, a dryer igniter weakens with age. It glows, but doesn’t get hot enough to reliably ignite the gas. Eventually it fails to light at all, and the dryer just tumbles room-temperature air through the whole cycle.

One important safety note: If your gas dryer’s exhaust smells like gas at any point, stop using it immediately and call SoCalGas at 1-800-427-2200 before doing anything else.

The Cause Both Types Share: Restricted Airflow

Here’s something that applies to gas and electric dryers equally, and it’s the most overlooked cause of “dryer runs but doesn’t dry properly” complaints: a blocked or overly long vent run.

When exhaust airflow is restricted — a clogged outside vent flap, a crushed flexible duct, or a run with too many 90-degree bends — heat and moisture can’t escape properly. The dryer runs hotter internally to compensate, thermal fuses blow prematurely, and heating elements or igniters fail faster than they should. If your dryer has been through more than one “no heat” repair, the vent is worth checking before replacing anything else.

Signs of a restricted vent:

• Clothes need two or more cycles to fully dry
• The dryer’s exterior feels unusually hot during a cycle
• Lint visibly accumulating around the outside vent flap
• A musty or hot smell in the laundry area

This is especially common in Los Angeles’ older housing stock, where original vent runs were rarely designed for modern high-capacity dryers.

DIY Difficulty by Repair

Repair	DIY Rating	Notes
Thermal fuse	Easy	Cheap part, accessible on most models
Electric heating element	Moderate	Requires removing back panel
Gas igniter	Moderate	Requires basic gas safety knowledge
Gas valve coils	Hard	Best left to a technician
Vent cleaning/inspection	Easy–Moderate	Depends on run length and access

When to Call a Tech

• You’ve confirmed it’s a heat issue (not overload or wrong cycle) and don’t want to test electrical or gas components yourself
• You smell gas at any point
• The dryer has failed the same way more than once (usually points to an underlying vent issue)
• You have a stacked unit and don’t want to deal with unstacking it yourself

We do dryer repair throughout Los Angeles with same-day service available, including dedicated service in Los Angeles, Beverly Hills, Santa Monica, and West Hollywood. The $85 diagnostic fee is applied toward your repair when you approve the work. Call (323) 806-3039.