Dryer Not Heating: What to Check First
A dryer that tumbles normally but comes out cold is one of the most common calls we get. The drum spinning tells you the motor and belt are working fine — the problem is isolated to the heating system, which narrows things down to just a few likely parts.
Gas Dryers vs. Electric Dryers
The heating method is different between the two types, so the likely cause depends on which one you have. Electric dryers use a heating element, similar to a toaster coil. Gas dryers use a small flame ignited by a set of valve coils and an igniter. Both types share one very common failure point: the thermal fuse.
The 3 Most Common Causes
1. A Blown Thermal Fuse
This small, inexpensive safety device shuts off heat if the dryer overheats, usually because of restricted airflow. It's a one-time-use part — once it blows, it has to be replaced, and it won't reset itself. A blown thermal fuse is one of the single most common reasons for a "tumbles but doesn't heat" dryer.
2. A Failed Heating Element (Electric Dryers)
Like any heating coil, this part eventually burns out from years of on-off cycling. When it fails completely, the dryer loses heat entirely while everything else keeps working normally.
3. Failed Igniter or Gas Valve Coils (Gas Dryers)
On a gas dryer, a failed igniter won't light the burner at all, and failed valve coils can prevent gas from flowing even if the igniter glows correctly. This is a job we recommend leaving to a technician, given the gas line involved.
Don't Overlook Airflow
A severely clogged dryer vent can cause the thermal fuse to blow repeatedly, which looks like a heating problem but is really an airflow problem. If you've replaced a thermal fuse before and it blew again within a few months, a blocked vent is very likely the root cause rather than a one-off defective part. See our dryer vent cleaning service or our full vent cleaning guide to check whether that's the real issue.
Let a technician pinpoint exactly which part failed.
See Dryer Repair →When to Stop Troubleshooting
If you're comfortable checking and clearing the lint trap and the exterior vent opening, that's a safe first step. Beyond that — testing a heating element, an igniter, or valve coils — requires removing panels and working with electrical or gas components, which is where we recommend calling it in.