Most household dryer vents should be professionally cleaned at least once a year. Larger households, homes with pets that shed, or households that do laundry daily may benefit from cleaning every six months. Vents that are longer or have more bends and curves accumulate lint faster and may require more frequent cleaning. Skipping annual cleanings increases both fire risk and energy costs over time.

Common warning signs include clothes taking longer than one cycle to dry, the dryer feeling unusually hot to the touch, a burning smell during operation, excessive lint around the lint trap or behind the dryer, and the outside vent flap not opening fully when the dryer is running. Higher-than-normal energy bills can also indicate a restricted vent. Any of these signs should be addressed quickly to prevent damage or fire hazards.

Yes. Lint is highly flammable, and when it builds up inside the vent, restricted airflow causes the dryer to overheat. According to the U.S. Fire Administration, clothes dryers are responsible for thousands of residential fires each year, and failure to clean is the leading cause. Regular professional cleaning is one of the most effective ways to reduce the risk of a dryer-related fire in the home.

A standard dryer vent cleaning typically takes between 30 minutes and one hour. Longer vents, vents with multiple bends, or vents that have not been cleaned in several years may take longer due to heavier lint buildup. Vents on rooftops or in second-story laundry rooms can also require additional time and specialized equipment.