From the front, a gas dryer and an electric dryer look almost identical, and inside they share most of their parts: the drum, belt, motor, rollers, lint screen, door switch and controls. The difference is in how they make heat. That one difference changes which parts fail, how the failures show up, and how much you can safely check yourself.
If you are trying to make sense of a no-heat problem, choosing between the two types, or just want to know what a technician will look at, this plain comparison should help.
How each type makes heat
Electric dryers
An electric dryer runs on a 240-volt circuit fed by a double breaker. Current flows through a coiled heating element inside a metal housing, and the blower pulls room air across the hot coil and into the drum. Thermostats or a thermistor switch the element on and off to hold the temperature.
Gas dryers
A gas dryer plugs into an ordinary 120-volt outlet, which powers only the motor, lights and controls. The heat comes from burning natural gas. When heat is called for, an igniter glows, the gas valve coils open, and the burner lights. A flame sensor watches the igniter and burner so the valve stays open only when it should. Gas dryers usually dry a little faster, but they need a gas line and a properly installed connector.
Most gas dryers in Alberta run on natural gas from the utility. Propane models exist for rural properties, but they need a different burner setup, and converting a dryer from one fuel to the other is a job for a qualified gas technician only.
Common electric dryer failures
- Burnt-out heating element. The coil breaks and the dryer tumbles with no heat. Our post on electric dryer heating element signs explains the symptoms.
- Half the power missing. If one side of the double breaker trips, the drum often turns but there is no heat. Some dryers flag it: Whirlpool's F4 E4 means low or no line voltage to the heater, and LG's nP means no current is detected at the heater.
- Burnt terminal block or cord. Loose connections where the cord meets the dryer can overheat and melt.
- Thermal fuse and high limit. These sit near the element housing and cut the heat if airflow drops. From the outside, a blown fuse looks exactly like a dead element.
- Heater relays. On electronic models, a relay on the control board can fail and leave the element without power even though the element itself is fine.
We cover all of these on our electric dryer repair page.
Common gas dryer failures
- Weak igniter. It glows, but not hot enough to let the valve open. Our guide to an igniter that glows but won't light walks through it.
- Gas valve coils. They often fail once warm, so the first load heats and the next does not.
- Flame sensor. A faulty sensor can stop the igniter from glowing at all, or shut the flame off too early.
- Burner safety switches. Gas burners have their own thermal cut-offs that open if the flame or burner area gets too hot, often because of a blocked vent. They must be tested, never bypassed.
- Gas supply. A closed shut-off after a move or renovation, or a kinked connector, means no flame. LG uses gAS when the dryer is not receiving gas, and its d80 airflow code can also mean no gas on gas models.
Gas repairs are a job for a licensed technician. See our gas dryer repair page for what we check.
Gas and electric parts compared
Most dryer problems have nothing to do with the heat source at all. Belts, idler pulleys, drum rollers, glides, motors, door switches, timers and control boards are much the same in both types. Both rely on a thermal fuse and high-limit thermostat to cut the heat when airflow is restricted, and both suffer when the vent is clogged. A dryer that keeps blowing its thermal fuse is usually telling you about the vent, as our post on a thermal fuse that keeps blowing explains.
In terms of repair, neither type is clearly easier. Electric heat faults usually come down to a single element or a breaker problem, which makes them quicker to pin down. Gas heat faults can involve the igniter, valve coils, flame sensor or supply, and need careful testing in a set order. The drum, belt and motor work is identical, and that is where most dryers eventually need attention.
| Area | Electric dryer | Gas dryer |
|---|---|---|
| Power supply | 240-volt, double breaker | 120-volt outlet plus gas line |
| Heat source | Heating element | Burner, igniter and gas valve |
| Typical no-heat fault | Broken element or tripped breaker leg | Weak igniter or valve coils |
| Overheat protection | Thermal fuse, high limit | Thermal fuse, high limit, flame sensor |
| Drum, belt and motor | Shared design | Shared design |
| Main safety risk | High voltage, overheating | Gas leaks, carbon monoxide |
Safety differences
Electric hazards
With an electric dryer, the main hazards are high voltage and overheating. The 240-volt supply can cause serious injury, which is why the terminal block, cord and breaker wiring are best left to a professional. Lint build-up near the element is the main fire risk.
Gas hazards and carbon monoxide
A gas dryer adds two more risks: gas leaks and carbon monoxide from a poorly vented exhaust. A clear, properly connected vent matters even more on gas models, especially during Calgary winters when frost can build up on the outside hood. A working carbon monoxide alarm near the laundry area is a good idea in any home with a gas appliance.
If you ever smell gas, do not touch light switches or unplug anything. Leave the house and call ATCO Gas emergency at 1-800-511-3447 from outside.
Safe checks before you call
Whatever type you have, unplug the dryer first. Then:
- Clean the lint screen and check the duct behind the dryer for kinks or crushing.
- Check the outside vent hood for airflow, lint and ice.
- For an electric dryer, check the double breaker in the panel and switch it fully off and on if one side has tripped.
- For a gas dryer, look at the shut-off handle on the gas line. In line with the pipe means open. If it is crossways, call us rather than turning it yourself.
- On a gas dryer, listen at the start of a heat cycle. A click from the valve and a soft whoosh of flame within a minute or so means the ignition sequence is running; silence or repeated clicking is worth reporting to the technician.
- Note whether the problem is no heat, no tumbling or no start at all. That narrows things down a lot.
Never open the gas valve or burner assembly, bypass a thermal fuse or jump a door switch to test the dryer.
When to call a technician
If the dryer still will not heat after these checks, our dryer not heating repair service covers both types. Our licensed and insured technicians repair gas and electric dryers of every brand across Calgary and nearby towns such as Airdrie, Cochrane and High River, with same-day service, a flat diagnostic fee and a full quote before any work. Every repair carries a 90-day parts and labour warranty. Call Fast Appliance Repair at (587) 779-6919. If you are weighing a repair against a new machine, our guide on whether to repair or replace a dryer can help.