"Air Duct Cleaning, Dryer Vent Cleaning, & Chimney Cleaning in NJ Serving Monmouth & Ocean County, New Jersey As time goes by, it is simply a fact that dirt, dust, and other foreign debri will build up in your vents, vent returns and air ducts. Even proper air duct filtration maintenance, dust will accumulate over time. For both health & safety reasons, it is wise to thoroughly clean your air ducts at least once per year to ensure proper air flow. Dryer vents and vent tubing are also often overlooked as a potential area of concern because dryers usually have a solid filter to capture lint. However, the vent tubing is visually out of site & is forgotten about. The lint in the tubing can become a fire hazard if not cleaned."