Dryer Not Heating Clothes: Causes & How to Fix
A dryer that tumbles but doesn't heat is usually caused by a clogged vent, a failed thermal fuse, or a broken heating element. The thermal fuse costs $15–30 and is the most common culprit on electric dryers. Most repairs involve removing the front or back panel and testing or replacing one component; professional repair typically costs $150–300.
Step-by-Step Fix
- 1
Check and clean the lint trap and vent
Remove the lint trap from the dryer door and empty it completely—even a light coating reduces airflow and heat. Trace the vent duct from the back of the dryer to the outside of your home and look for clogs, kinks, or lint buildup. If the vent is clogged, disconnect it and use a vent brush or vacuum to clear the blockage.
- 2
Unplug the dryer and access the heating element or thermal fuse
Turn off the dryer and unplug it from the electrical outlet to prevent shock. Most electric dryers require you to remove the front or rear panel; consult your model's manual or search online for a diagram. Take a photo before disconnecting any parts so you can reassemble correctly.
- 3
Test the thermal fuse with a multimeter
Locate the thermal fuse, a small cylindrical part usually near the heating element or blower housing. Set a multimeter to the ohms setting and touch the probes to each end of the fuse. A working fuse shows a reading close to zero ohms; a failed fuse shows infinite resistance and must be replaced.
- 4
Replace the thermal fuse if it failed
Order a replacement thermal fuse for your dryer model (search by brand and model number). Unclip or unscrew the old fuse and snap the new one in place, making sure it's seated firmly. Reassemble the dryer panel and plug it back in.
- 5
Test the heating element if the fuse was good
If the thermal fuse tested okay, set the multimeter to ohms again and test the heating element coil. A working element shows 10–20 ohms of resistance; no reading or very high resistance means it has failed. Unclip the element from its housing and order a replacement for your model.
- 6
Run a test cycle and monitor for heat
After replacing the component, plug in the dryer, run a high-heat cycle with a damp towel inside, and feel the air coming out of the vent after 2–3 minutes. Heat should be noticeable; if not, the issue may be with the igniter or heating coil and you should call a professional.
⚠️ Safety Notes
- Always unplug the dryer before opening the cabinet or touching internal parts to avoid electric shock.
- The thermal fuse is a safety device that cuts power to the heating element if the dryer overheats; never bypass it or use one rated for a higher temperature.
- If you smell burning during operation or see smoke, stop immediately and unplug the dryer—a short or damaged component may be present.
When to Call a Pro
Call a technician if the thermal fuse keeps blowing repeatedly after replacement, as this indicates a deeper heating or airflow problem. Also call if you don't have a multimeter or are uncomfortable removing the dryer panel.
Frequently Asked Questions
- Why does my dryer tumble but not heat?
- The most common causes are a clogged vent (reduces airflow), a failed thermal fuse (cuts power to the heating element), or a broken heating element. Start by cleaning the lint trap and vent; if those are clear, the thermal fuse has likely failed and costs $15–30 to replace.
- How do I know if the thermal fuse is bad?
- A thermal fuse cannot be reset and will not produce any reading on a multimeter if it has failed. If your dryer won't heat and the lint trap and vent are clean, a failed thermal fuse is the most likely culprit and requires replacement.
- Can a clogged dryer vent prevent heating?
- Yes, a clogged vent restricts airflow and causes the dryer to overheat, which triggers the thermal fuse to blow as a safety measure. Always clean or replace your vent duct before replacing internal parts.
- How much does it cost to fix a dryer that won't heat?
- A thermal fuse replacement costs $15–30 for the part and 30–45 minutes of DIY work, or $150–250 if you hire a technician. A heating element replacement runs $30–60 for the part, or $200–350 with professional labor.
- Is it safe to use a dryer if the thermal fuse keeps blowing?
- No; a repeatedly blowing thermal fuse signals overheating or airflow problems that could damage the dryer or pose a fire risk. Investigate the underlying cause—usually vent blockage or a malfunctioning component—before running the dryer again.
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