Quick Answer
A dryer that runs but doesn't heat is almost always caused by one of six faults: a blown thermal fuse, a blocked lint vent, a failed heating element, a faulty gas valve or igniter, a broken thermostat, or a tripped circuit breaker.
A blocked vent is the most common cause and also the most dangerous if ignored — it's the leading cause of dryer fires in Australian homes.
There's nothing more frustrating than opening the dryer after a full cycle to find your clothes are still damp. The drum is turning, the machine sounds normal, but there's simply no heat reaching the clothes.
This guide walks through the six most common causes Melbourne technicians see, in the order they're worth checking, plus the one fault you should never ignore.
The 6 Most Common Causes
- Blown thermal fuse — trips when the dryer overheats, often due to a blocked vent
- Blocked lint vent duct — restricts airflow and is a serious fire risk
- Failed heating element — the coil that produces heat in electric dryers
- Faulty gas valve or igniter — affects gas dryers specifically
- Broken thermostat or thermistor — misreads temperature and cuts heat early
- Tripped circuit breaker or loose power connection
Check the Vent First
Before anything else, check the external vent flap on your outside wall while the dryer is running. It should swing open freely with strong airflow. If it barely moves, or there's no airflow at all, the duct is blocked with lint — this is the single most common cause of no-heat dryers in Melbourne homes, and it should be cleared before the dryer is run again.
Signs the Fault Is Electrical, Not the Vent
- The vent is clear but there's still no heat at all
- The dryer trips the circuit breaker repeatedly
- You smell burning or notice scorch marks near the back panel
- The drum stops turning completely, not just the heat
What's Safe to Check Yourself vs When to Call a Pro
Safe to Check Yourself
- Checking the external vent flap moves freely when running
- Cleaning the lint filter before every load
- Checking the dryer is plugged in securely and the breaker hasn't tripped
Always Call a Licensed Technician
- Heating element testing and replacement
- Gas valve, igniter or thermocouple repairs
- Thermal fuse and thermostat replacement
- Any internal electrical wiring work
Frequently Asked Questions
Why is my dryer running but not heating?▼
The most common causes are a blocked lint vent, a blown thermal fuse, or a failed heating element. Start by checking the external vent flap for airflow.
Is a dryer with no heat dangerous to keep using?▼
If the cause is a blocked vent, continuing to run the dryer increases fire risk significantly. Stop using it until the vent is cleared or inspected.
Can I replace a dryer heating element myself?▼
It involves mains electrical components, so in Victoria this repair must be carried out by a licensed technician.
How long does a dryer heating repair take?▼
Most heating element, thermostat or thermal fuse replacements are completed in a single same-day visit once the part is confirmed.
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Dishank Patel
Lead Technician & Founder · DP Electric Melbourne
Dishank Patel has over 10 years of hands-on experience repairing household appliances across Melbourne's eastern suburbs. He holds all required Victorian electrical and gas licensing and has personally repaired thousands of appliances across brands including Bosch, Miele, LG, Samsung, and Fisher & Paykel.