How Often to Clean Your Dryer Vent to Prevent Buildup

There is something comforting about the quiet rhythm of laundry day. Maybe it's the steady hum of the dryer, the warmth of freshly dried towels, or the soft scent that fills the air. But hiding behind your appliance is a very real hazard: a vent system that, over time, quietly collects lint and debris. Left unchecked, that buildup can slow your dryer’s performance, raise your energy bills, and pose a serious fire risk.

Cleaning the dryer vent is a crucial home maintenance task that protects both your appliance and your peace of mind. When airflow stays clear, clothes dry faster, your dryer runs more efficiently, and your home stays safer.

Here's how often to undertake this small act of maintenance to better preserve one of your home’s hardest-working machines.

Why Dryer Vent Maintenance Matters

Routine vent cleaning is a quick, preventive measure that pays off in safety, efficiency, and longevity for your dryer. A clogged vent restricts airflow, forcing the dryer to run longer and hotter, which raises utility costs, strains the heating element and motor, and shortens the appliance’s lifespan.

Lint accumulation also increases the risk of fire inside the duct. A small amount of lint escapes the trap with every load, gradually narrowing the vent until airflow drops and hazards rise. To cut down on this accumulation, empty the lint screen after every load, wash it monthly with warm water and mild dish soap to remove fabric softener residue, and add thorough vent cleanings to your annual home care calendar.

Cleaning Frequency

For most households, professionals recommend cleaning the dryer vent at least once a year. For dryers that see extra-frequent use (such as those in households with multiple kids or pets), consider cleaning every six months. Very long or complex vent runs, especially those routed through ceilings or walls, may also need more frequent service.

Check the exterior vent monthly to ensure that no lint or debris is blocking it. And avoid overloading the dryer and use the appropriate heat setting to limit excess lint production.

Additional Signs It's Time to Clean Your Dryer Vents

If your dryer suddenly takes longer to dry or feels unusually hot to the touch, schedule a cleaning regardless of the calendar. Airflow may be restricted. Visible lint around the vent connection or exterior hood also signals buildup and a need for cleaning.

Any burning or smoky odor is an immediate red flag that requires attention ASAP.

When to DIY—and When to Hire a Pro

If the dryer vent run is short and easily accessible, you can safely use a flexible vent brush kit or a vacuum with a long hose to handle the cleaning yourself. Always unplug the dryer first for safety. Then, gently detach the duct and brush from both the appliance side and the exterior hood. Reconnect securely, and then test for strong airflow at the outside vent while running the dryer on an air-only or low heat setting.

For long, angled, or concealed ductwork—or if airflow remains weak after a DIY attempt—call a professional. A trained technician can use a rotary brush through the entire run, verify proper duct materials and routing, and check for damage, kinks, and even bird nests. Many also measure airflow and confirm safe clearances behind the unit.