If your dryer is no longer getting hot or producing heat, it might be due to any number of parts or it might mean that your dryer vent simply needs cleaning or a combination of the two. Here’s what to check, including what you should check first.
Clogged Dryer Vent
A restricted dryer vent will prevent air from properly circulating within your dryer’s drum. You dryer will get very hot within a short period of time, causing another part on your dryer like the high limit switch, thermostat or the thermal fuse to turn off the heat element to prevent overheating. Clean your dryer venting with a Dryer Vent Duct Cleaning Brush.
The thermal fuse is a safety device designed to protect the dryer from overheating and will blow to prevent this from happening. Once the fuse is blown, it will need to be replaced. Depending on your dryer’s model, there could be a fuse located by the blower and another one by the heating element. Check all thermal fuses in your dryer for continuity using a multimeter and replace all faulty fuses with new thermal fuses.
The heating element heats the air before it enters the dryer’s drum. If the heating element is faulty, it will need to be replaced. If your dryer is electric, check the heating coils. If your dryer is gas, you will need to check the igniter and the gas valve coils to insure both are working properly. Replace any parts that are faulty.
- Purchase a new Electric Dryer Heating Element Part
- Purchase a Gas Dryer Igniter Part
- Purchase a Gas Dryer Gas Valve Coil Kit
High Limit Thermostat and Cycling Thermostat
The high limit and cycling thermostats both regulate the temperature inside the dryer to prevent the dryer from getting too hot. The high limit thermostat is a safety device located next to the heating element. It will turn the element off if the dryer overheats. The cycling thermostat “cycles” (turns on and off) to maintain the correct amount of heat in the dryer. It is usually located on the blower or near the internal airflow ducting.
If either of these thermostats breaks, your dryer might not heat properly. Test the thermostats using a multimeter and replace them if necessary.
Keep your dryer venting and dryer lint-free!
Tip: Make sure your dryer’s venting is clean before testing out your part replacement. Even if you replace the broken part, like the thermal fuse, or high-limit thermostat, if air cannot properly circulate throughout the dryer, then overheating will occur and these parts will break again in order to prevent it. It’s recommended that you clean out your dryer at least once a year.