By Vortex Airworks · Published 2026-10-12
Clean the lint filter before or after every load. For the vent, have it inspected periodically and cleaned when it needs it. How often that is depends on how much you use the dryer, the condition and route of the vent, and your dryer manufacturer's instructions.
What official guidance says
The Consumer Product Safety Commission advises cleaning the lint filter before or after each load and cleaning the vent and exhaust duct periodically. It does not set one interval for every home. Your owner's manual gives the manufacturer's own instructions.
Source: CPSC: Overheated Clothes Dryers Can Cause Fires (PDF)
Inspection versus cleaning
A periodic inspection tells you whether the vent needs cleaning. Cleaning is done when buildup or reduced performance calls for it. Follow your dryer manufacturer's maintenance instructions. Arrange an inspection sooner if drying performance changes or you notice signs of a restriction.
What affects how often
- How many loads you run each week.
- Vent length, number of turns, and where it exits.
- Pet hair and heavy items like towels and blankets.
- The manufacturer's instructions for your dryer.
Crushed or unsuitable ducting
Crushed, kinked, or unsuitable duct material is a condition to assess and possibly correct, not just a reason to clean more often. CPSC recommends rigid or corrugated semi-rigid metal duct rather than plastic or foil.
Source: CPSC: Overheated Clothes Dryers Can Cause Fires (PDF)
Using an airflow reading
Comparing airflow readings over time can be one useful indicator, as long as they are taken under similar conditions. A good reading is not proof that the whole system is safe.
Signs you should not wait
- Clothes taking longer than usual to dry.
- Clothes or the laundry room getting unusually hot.
- The exterior flap not opening while the dryer runs.
- Lint around the outside hood.
If you smell burning
A burning smell is not a routine maintenance sign. Stop using the dryer and have the cause assessed before you use it again. If there is smoke or you suspect a fire, leave the home and call 911.
Sources
Related guides
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