A booster fan may be necessary for a dryer vent to ensure proper airflow and prevent blockages from lint buildup. Without sufficient airflow, the dryer may not operate efficiently and could potentially overheat, leading to a fire wizard. Installing a booster fan can help improve ventilation and reduce the risk of dangerous situations. Booster fans help increase airflow through your dryer duct, reducing the amount of lint that builds up and improving your drying times by up to 50%. On top of that, they can even make your dryer last longer. We recommend using a dryer booster fan if your duct length exceeds 25 feet (or is shorter but has multiple bends), or if you live in an apartment or condo with concrete firewalls. Trust us, this is a small investment that can make a big difference in your laundry routine!