Dryer not heating up but runs? 6 fixes for Whirlpool, Samsung, LG, GE and more

If your dryer runs but the clothes come out cold (or just damp after a full cycle), the heat side has failed but the motor is fine. Six things can cause this. Five of them you can diagnose in under an hour with a multimeter and a screwdriver. The sixth is a control board call that's usually not worth fixing on an older machine. Here's the order I check them on a service call, easiest and cheapest first.

1. Confirm the dryer actually runs cold (not just lukewarm)

Before pulling anything apart, hold your hand near the lint screen while the dryer runs on a heat cycle. Hot air should hit you within 2-3 minutes. If you feel cool air, the heating system is dead. If you feel barely warm, the dryer is heating but airflow is restricted. The two problems look identical to the user but the fixes are completely different. If it's airflow, see dryer takes too long to dry. The rest of this article is for fully cold runs.

2. Check the thermal fuse (the #1 cause)

The thermal fuse is a one shot safety part that pops when the dryer overheats once. After that, the dryer can still run but produces zero heat. Almost every "dryer suddenly stopped heating" call is this. Causes a thermal fuse to blow: - A clogged lint filter or vent (heat builds up, fuse trips) - A failing high limit thermostat (sends the dryer into thermal runaway) - A bad heating element shorted to ground (rarer) To test: 1. Unplug the dryer (electric) or shut off the gas + unplug (gas) 2. Remove the back panel (4-6 screws) 3. The fuse is a small white or black plastic disc on the blower housing, usually with two wire terminals 4. Disconnect both wires and touch a multimeter set to continuity to the two terminals 5. A working fuse beeps (closed circuit). A dead fuse reads infinity (open). Replace the fuse plus inspect why it blew. If you skip the cause and just swap the fuse, the new one usually pops within a few cycles. Check the lint trap, vent hose, and outdoor vent for blockages first.

3. Test the heating element (electric dryers only)

The heating element is a long coil of nichrome wire inside a metal cage. Over years of use it eventually breaks. When it breaks, no heat. Test it the same way as the fuse: 1. Unplugged 2. Pull the back panel off 3. The element is a large rectangular box on the back, usually 8-12 inches across 4. Disconnect the two terminal wires 5. Multimeter on continuity, touch both terminals 6. Working element reads 8-50 ohms depending on model. Open circuit means the coil is broken. Visually inspect too. A broken element often shows a clear gap or a sagging coil. The break is usually obvious once the element is out. The 279838 Whirlpool family element fits Whirlpool, Kenmore, Maytag, Roper, Amana, Admiral. Most other brands are similar but check your model.

4. Test the high limit thermostat

The high limit thermostat is a smaller disc, usually right next to the heating element or on top of the element housing. Its job is to cut power to the element if temperatures get dangerously high (above ~250 F). When it fails open, the element never gets power and the dryer runs cold. When it fails closed, the dryer overheats and pops the thermal fuse (back to step 2). Test for continuity at room temperature. It should be closed (beep). If it reads open at room temp, the thermostat is dead, replace it. The combo kits I link below include a replacement.

5. Check the cycling thermostat

This thermostat sits in the airflow path and cycles the heat on and off to maintain the right drum temperature. When it fails open, no heat at all (same symptom as bad element or fuse). When it fails closed, the dryer overheats. Test the same way: continuity at room temperature should be closed. Open = dead. This thermostat is the 3387134 in the Whirlpool family. The combo kit I recommend includes both the cycling thermostat and the thermal fuse, which is the right move because both go bad around the same time and the kit is barely more than buying the fuse alone.

6. Check the timer or control board

If steps 2-5 all test good, the problem is upstream at the timer (older mechanical dryers) or the control board (modern electronic dryers). The timer or board is what tells the heating circuit to energize. If that signal never goes through, the element never powers up even though everything downstream is fine. This is harder to test without service mode access. The board diagnosis usually means a service tech ($150-200 call). Boards run $200-400 plus install. On a dryer more than 8 years old, this is the point where buying a new dryer often makes more financial sense than fixing.

Brand specific notes

Whirlpool, Kenmore, Maytag, Amana, Roper, Admiral. All built on the same Whirlpool platform. The 279838 element + 3387134/3392519 thermostat-fuse kit fits all of them. Back panel comes off with 4 hex screws. 30 minute job. Samsung. Samsung dryers use a different element (DC47-00019A is the most common). Same diagnosis steps but the part numbers differ. Samsung also has a known issue with the moisture sensor giving false dry readings, can look like a heat problem but is actually a sensor problem. Test heat directly first. LG. LG dryers have heating elements integrated into a sealed assembly (5301EL1001J typical). Slightly more expensive replacement, similar install. LG's diagnostic mode can read the element resistance directly, useful if you have the manual. GE. GE element is WE11M29 typical. Access is from the front on most GE dryers, not the back. Check your model. GE control boards fail more often than Whirlpool's, so don't immediately rule out the board on a GE. Frigidaire and Electrolux. 5300622032 element typical. Easy access from the back. Frigidaire dryers have a separate thermal limiter (different part from the thermal fuse) that also needs to be checked. Gas dryers (any brand). The element doesn't apply, but the igniter and gas valve coils take its place. Test the igniter for continuity (~50-400 ohms typical). If the igniter glows but the gas never comes on, the coils are bad. Gas valve coils almost always fail in pairs, replace both at once.

Frequently asked questions

Why does my dryer run but no heat? The motor circuit and the heat circuit are separate. The motor still spins because its circuit is fine, but the heating element, thermal fuse, or thermostat in the heat circuit has failed. Run through the steps above in order. How do I know if the heating element or the thermal fuse is bad? Both test the same way (continuity with a multimeter), but the symptom is identical so you have to actually check. Test the thermal fuse first because it's the cheapest fix and the most common failure. Can a clogged dryer vent cause no heat? Yes, indirectly. A clogged vent makes the dryer overheat, which trips the thermal fuse. After the fuse pops the dryer makes no heat. Replacing the fuse without clearing the vent means the new fuse blows again within a few cycles. How long does a dryer heating element last? Average 8-12 years with normal use. Less if the vent is regularly clogged or the dryer runs overloaded. Can I run my dryer if the heating element is broken? Yes, the dryer will spin and tumble fine, but clothes come out cold and damp. Won't damage anything to run it briefly to confirm the symptom. Should I replace the thermal fuse and the heating element at the same time? If both test bad, yes. If only the fuse tests bad and the element looks OK, just do the fuse and inspect the vent. Don't replace good parts. Why did my new heating element burn out so fast? Almost always a vent issue. The element overheats when air can't move through, the nichrome wire fatigues and breaks. Clean the vent end to end, including the outdoor flap, before installing a new element. For airflow problems and vent maintenance, see dryer takes too long to dry. For thumping noises, see dryer making thumping noise.

Need to buy the actual part?

• 279838 Dryer Heating Element (Whirlpool, Kenmore, Roper, Maytag, Amana, Admiral) , install guide with compatibility list
• 3387134 + 3392519 Cycling Thermostat + Thermal Fuse Kit (Whirlpool, Kenmore, Maytag, Amana, Roper) , install guide with compatibility list