The answer to 'how often to clean dryer vent' is that you should clean your dryer vent at least once a year, or more frequently if you notice any signs of blockage or reduced airflow. Regularly cleaning your dryer vent helps prevent fire hazards, improves the efficiency of your dryer, and extends the lifespan of your appliance.
Over time, lint and debris can build up in the vent, restricting airflow and creating a fire risk. Cleaning the vent annually, or more often if you use your dryer frequently, helps remove this buildup and ensures your dryer is operating safely and efficiently.