Heating elements in a dryer usually burn out if they overheat. A technician can help you identify the cause of overheating, but in most cases, it’s usually down to a lack of airflow, power surges, and faulty shut-off switches. Regular and correct duct maintenance, installing a surge protector, ensuring the circuit isn't overloaded, and replacing any broken switches can help keep your heating element from overheating and, by extension, burning out.