How To: Clean a Dryer Vent A dryer vent that's clogged with lint can reduce the appliance's efficiency and could be a potential fire hazard. Here’s how to get your vent clean—and keep it that way. How to Clean a Clothes Dryer Vent. If your dryer vent hasn't been cleaned in the past year or two, it probably needs a good cleaning. Dryer vents get clogged with lint from your dryer, which can affect how your dryer functions. You can. To reduce the risk of fire and optimize your dryer's performance, you should clean your dryer's vent anywhere between every three months and once a year. You don’t have to hire a professional to clean your dryer vent. Using an inexpensive duct cleaning brush, you can do it yourself. Here’s how. If you don't have a dryer vent brush kit, you can use a long-handled scrub brush to clean short sections of rigid duct. Although the brush has a limited reach, you can clean each duct section by brushing from both ends. How to clean and blow out a dryer vent with the LintEater Dryer Vent Cleaning System and electric leaf blower. It worked amazing well! Chris Monroe/CNET Step 1: Locate your duct. In order to properly clean your dryer's ventilation system, you have to first know where it is and where it ends. In back of most dryer units is a short 4-inch diameter exhaust. See how to clean dryer vent! Believe it or not, I spent years not knowing that you needed to clean out your dry vent. I would clean the lint off of the lint trap when I put clothes in the dryer, but that was as far as I ever got. Amazon link : . This is a how to video to get all that lint out of your dryer vent. This helps your dryer to work properly. I appreciate your efforts to make aware of how to clean dryer vent but we should vacuum first to clean the lint from inside the vent. Many people use flexible vent which usually crushed and blocked airflow and cause the dryer to overheat.