Gas Dryer vs Electric Dryer — Common Problems

Gas and electric dryers share more than half their components — the drum, belt, idler, blower, thermal fuse, cycling thermostat, and high-limit thermostat are essentially identical. What differs is **how heat is produced**, and that difference creates two distinct failure-mode families. This guide is a diagnostic decision tool: figure out which family your problem belongs to before opening the dryer or ordering parts. For specific symptom guides, see: - [Dryer not heating](/appliance-repair-resource-center/dryer-repair-guides/dryer-not-heating) — generic and brand variants - [Dryer overheating](/appliance-repair-resource-center/dryer-repair-guides/dryer-overheating) - [Dryer won't turn on](/appliance-repair-resource-center/dryer-repair-guides/dryer-wont-turn-on) ## What's the same Mechanical and control parts are essentially common across gas and electric: - Drive belt, idler pulley, motor - Drum, drum support rollers, rear bearing/glides - Blower wheel and housing - Door switch, start switch, timer / control board, moisture sensors - Thermal fuse, cycling thermostat, high-limit thermostat - Vent system and lint screen If the dryer "won't turn on" or "drum doesn't spin" or "is squeaking/grinding," the gas-vs-electric distinction does not matter — those failures are mechanical or control-side. Skip to the symptom guide above. ## What's different: heat production | | **Electric dryer** | **Gas dryer** | |---|---|---| | Power supply | 240V dedicated circuit, 4-prong NEMA 14-30 outlet | 120V outlet + dedicated gas line (NG or LP) | | Heat source | Resistive heating element (~5,400W coil) | Gas burner with igniter, flame sensor, gas valve coils | | "No heat" causes (specific) | Burnt-out heating element, failed terminal block, lost one leg of 240V supply | Failed igniter, failed flame sensor, failed gas valve coils, gas supply shut off | | Typical "no heat" repair cost (Bay Area) | $220–$380 (element) | $220–$340 (igniter, most common) | | Conversion | n/a | NG ↔ LP requires a manufacturer kit; not interchangeable | | Vent requirements | Metal vent, ≤25 ft equivalent | Metal vent, ≤25 ft equivalent | ## Electric-only failure modes 1. **Heating element burnout** — single most common electric-only failure. The coil opens (no continuity) and the dryer runs cold air indefinitely. Visible break in the coil is common. 2. **Burnt terminal block** — the connection where the 4-prong cord meets the dryer. Loose connections arc and burn. Symptoms: intermittent heat, burning-plastic smell, scorched terminal. 3. **Lost leg of 240V** — a tripped half of a double-pole breaker, a corroded outlet, or a damaged cord. The dryer runs (drum spins, light works on 120V) but never heats. ## Gas-only failure modes 1. **Failed igniter** — single most common gas-only failure. The ceramic igniter cracks or burns through; you'll hear the gas valve click but no flame appears. 2. **Failed flame sensor / radiant sensor** — sees nothing, refuses to open the gas valve. Brief heat then cold for the rest of the cycle is a classic flame-sensor pattern. 3. **Failed gas valve coils** — coils stop opening the valve; igniter glows but no gas flows. 4. **Gas supply issues** — shutoff valve closed, LP tank empty, or a regulator problem upstream. ## Bay Area context Most Bay Area homes built after ~1995 are plumbed for electric dryers (240V drop, no gas stub in the laundry area). Older Peninsula and East Bay homes — much of Palo Alto, Menlo Park, Burlingame, Berkeley — often have a gas stub from the original construction, and the homeowner has the choice. Operating-cost-wise, gas is typically 30–50% cheaper to run in the Bay Area at current PG&E rates, but the upfront installation cost (gas line + venting) usually only pays back if you do many loads per week. ## How to tell which problem you have, fast Open the door, start a timed-dry cycle on the hottest setting. Reach in after 3 minutes. - **Drum spinning, air cold** → no-heat problem. Gas: igniter/flame sensor/valve. Electric: element/terminal/240V. - **Drum spinning, air warm, shuts off after 15–25 min** → overheating problem. See [Dryer overheating](/appliance-repair-resource-center/dryer-repair-guides/dryer-overheating). - **Drum not spinning** → mechanical/control problem. See [Dryer won't turn on](/appliance-repair-resource-center/dryer-repair-guides/dryer-wont-turn-on) or [Samsung dryer not spinning](/appliance-repair-resource-center/dryer-repair-guides/samsung-dryer-not-spinning). - **Drum not spinning AND no display** → power problem (electric) or 120V outlet (gas). ## Safety notes specific to each type - **Electric:** unplug the 240V cord before any service. The terminal block can hold residual charge; never test with the cord plugged in. - **Gas:** shut off the gas supply valve before any service. After reconnecting the gas line, leak-test every joint with soapy water — bubbles mean a leak that must be re-tightened or re-sealed. ## Related dryer guides - [Dryer not heating](/appliance-repair-resource-center/dryer-repair-guides/dryer-not-heating) - [Dryer overheating](/appliance-repair-resource-center/dryer-repair-guides/dryer-overheating) - [How to clean dryer vent](/appliance-repair-resource-center/dryer-repair-guides/how-to-clean-dryer-vent) - [Dryer repair cost guide](/appliance-repair-resource-center/appliance-repair-cost-guides/dryer-repair-cost) ## When to call a technician Both 240V electrical work and gas appliance service should be performed by licensed technicians. [Schedule a dryer repair](/dryer-repair) or call **(510) 930-0404** — CA License #49404, factory-trained on gas and electric. Diagnostic $90, waived with any approved repair.