Dryer Not Heating? Here's How to Fix It
Dryer not heating up? Diagnose and fix a dryer that runs but doesn't get hot. Covers gas & electric dryers — Samsung, Whirlpool, LG, GE, Maytag & more.
Updated April 6, 2026 · 8 min read
Why Your Dryer Isn't Heating
A dryer that tumbles but produces no heat is one of the most common appliance problems. The drum spins, clothes tumble around, but everything comes out damp and cold. In most cases, the fix is one of five things: a blown thermal fuse, a clogged dryer vent, a bad heating element, a faulty gas igniter, or a tripped breaker (electric dryers need both legs of a 240V circuit).
Check 1: Clogged Dryer Vent (Start Here)
A clogged vent is the #1 cause of a dryer not heating properly — and it's also a fire hazard. When the vent is blocked with lint, hot air can't escape, causing the dryer to overheat and trip safety devices (thermal fuse). Check the vent by disconnecting the vent hose from the back of the dryer and running the dryer for a few minutes. If it heats up fine with the vent disconnected, the vent is your problem. See our complete dryer vent cleaning guide for step-by-step instructions.
Check 2: Blown Thermal Fuse
The thermal fuse is a one-time safety device that blows when the dryer overheats — usually because of a clogged vent. It's the single most common part failure in dryers. The fuse is located on the exhaust duct inside the dryer cabinet or on the blower housing. Test it with a multimeter — if there's no continuity, it's blown and must be replaced. Thermal fuses cost $5–$15. Important: Always fix the underlying cause (usually a clogged vent) when replacing a thermal fuse, or it will just blow again.
Check 3: Electric Dryer — Heating Element
Electric dryers use a coiled wire heating element to generate heat. Over time, the coil can break, creating an open circuit. To test, access the heating element (location varies — consult your model's manual), disconnect it, and test with a multimeter for continuity. No continuity = broken element. Replacement heating elements cost $20–$60. If you have a Samsung dryer that's not heating, this is one of the first things to check.
Check 4: Gas Dryer — Igniter and Gas Valve Coils
Gas dryers use an igniter to light the gas burner. The igniter glows orange to reach ignition temperature, then the gas valve opens. If the igniter fails, you get no heat. Watch through the observation window on the bottom front of the dryer — you should see the igniter glow bright orange. If it doesn't glow at all, replace it ($15–$30). If it glows but the gas never ignites, the gas valve solenoid coils are likely faulty ($10–$25 for the set).
Check 5: Electric Dryer — Breaker Issues
Electric dryers run on a 240V circuit using a double-pole breaker. Here's the thing most people don't know: if one leg of that double breaker trips, the dryer motor will still run (it uses 120V), but the heating element won't work (it needs 240V). Check your breaker panel — the dryer breaker should be fully in the ON position with both switches aligned. Flip it all the way off, then back on.
When to Call a Pro
Consider professional help if the thermal fuse keeps blowing after replacement, you smell gas near a gas dryer, the control board is displaying error codes, or the dryer is under warranty. A professional dryer heating repair typically costs $100–$250 including parts.
If your dryer heats but clothes are still damp, that's a different issue — see our dryer not drying guide.
Need a dryer repair? Schedule a Repair →
Related Repair Guides
Brand Comparison: Safety Components by Manufacturer
Different dryer brands use different combinations of safety components in their heating circuits, which changes the most likely failure point for each brand. Whirlpool, Maytag, and KitchenAid dryers typically use a thermal fuse on the exhaust duct, a cycling thermostat on the heater housing, and a high-limit thermostat as a secondary safety. Samsung dryers use a thermistor instead of bimetal thermostats to sense temperature, combined with a thermal fuse and a thermal cut-off fuse. Samsung's thermistor failure produces a more subtle symptom than a blown fuse — the dryer may heat inconsistently or at lower than normal temperatures rather than producing no heat at all. LG dryers also use a thermistor system, typically with two temperature sensors in different locations, and they are prone to thermistor wire harness connection issues in humid environments that cause intermittent no-heat complaints.
When a Burning Smell Accompanies the No-Heat Complaint
A burning smell coming from a dryer that is not heating is a safety concern that warrants turning the machine off immediately and unplugging it before further investigation. In most cases, the smell comes from one of three sources. The first is lint accumulation inside the dryer cabinet — lint that bypassed the filter over time accumulates on the heating element housing, motor, and wiring, and when the element runs hot it can char this lint and produce a burning plastic or cloth smell. The second source is a failed heating element that has developed an arc or short between the coil and its housing. The third is a failing motor bearing that generates friction heat. All three situations require a technician inspection before the machine should be run again.
Gas Pressure Diagnosis for South Florida Gas Dryers
Gas dryers require sufficient gas pressure at the inlet valve to allow the igniter to light the burner reliably. The minimum inlet gas pressure for most residential gas dryers is 4.0 inches of water column for natural gas and 10 to 11 inches of water column for propane. In South Florida, natural gas is the standard, and most residential gas supplies provide adequate pressure under normal conditions. However, pressure can drop when multiple gas appliances run simultaneously — a gas range, water heater, and dryer operating at the same time can reduce available pressure enough to cause intermittent ignition failures on the dryer. If your dryer heats sometimes but not others, and the problem is worse when other gas appliances are running, gas pressure fluctuation is worth investigating.