Direct Answer
Many homes benefit from dryer vent cleaning about once a year, but homes with heavy laundry use, long vent runs, rentals, pets, or slow drying times may need service sooner. If clothes take longer than normal to dry or the laundry area feels unusually hot, the vent should be checked.
Warning signs of a restricted dryer vent
The most common sign is that normal loads take longer to dry. Other clues include a hot dryer top, a humid laundry room, lint around the exterior vent, or an exterior flap that barely opens while the dryer is running.
- Clothes need a second cycle
- Dryer feels hotter than usual
- Laundry room feels damp, hot, or linty
- Exterior vent has weak airflow or visible buildup
Why rentals and busy homes need attention
Vacation rentals, large families, pet households, and properties with back-to-back laundry loads can build lint faster. A vent line with several turns or a roof-level termination may also be harder to keep clear.
What to include in the request
Mention whether the dryer is gas or electric, where the exterior vent exits, whether the vent goes through the roof or wall, and whether you have noticed birds, screens, crushed transition hose, or error codes on the dryer.
When to call a professional
Schedule service if drying time increases, airflow feels weak, a rental property has heavy use, or you have not had the vent checked in a while.