Quality Clean provides professional Air Duct Cleaning in Northeast Ohio. It is always a good time to make sure your air ducts are clean, no matter the season! When cleaning your system, details are important to us. The average time it takes to clean out an air duct system is about 2 – 4 hours, depending upon the amount of vents inside of the home and whether or not they will need to be unscrewed and/or cut away from the interior ceiling and walls.