The answer to 'how often to clean dryer vent' is that you should clean your dryer vent at least once a year, or more often if you notice any signs of a blockage or reduced airflow. Cleaning the vent regularly helps prevent fire hazards, improve energy efficiency, and extend the life of your dryer.
Dryer vents can become clogged with lint, debris, and even small animals over time, which can restrict airflow and cause your dryer to work harder. This not only increases your energy bills, but also raises the risk of a dryer fire. By cleaning the vent annually, you can remove any buildup and ensure proper ventilation for your dryer.