The part(s) or condition(s) listed below for the symptom Dryer has a burning smell are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.
Over time lint will collect in the interior dryer cabinet, covering the dryer components. Lint that collects on the heater or burner assembly can ignite and cause a fire. Excessive lint can also cause other components like the motor, rollers and idler pulley to fail. The dryer cabinet should be checked and cleaned every 1 to 3 years depending on use.
If the vent line is clogged or partially clogged, it will restrict the airflow through the dryer, substantially increasing the drying time and cabinet temperature and potentially causing a burning smell. To ensure proper dryer performance, you should clean your dryer’s venting system at least once per year.