The answer to 'how often to clean dryer vent cleaning' is that most experts recommend cleaning your dryer vent at least once a year. Regularly cleaning the vent helps prevent lint buildup, which can be a serious fire hazard. Lint accumulation can also reduce the efficiency of your dryer, leading to longer drying times and higher energy bills.
If you notice your dryer is taking longer to dry clothes or the vent is emitting excess lint, it's a good idea to have the vent cleaned more frequently, such as every 6-12 months. Homes with multiple residents, long vent runs, or frequent dryer use may need to clean the vent even more often, such as every 6 months.