What is the best Season for Duct Cleaning? Home » FAQs » What is the best Season for Duct Cleaning? There is no best Season for duct cleaning, if there is smell coming out of your duct or if not a good air flow. Then you probably need duct cleaning. January 19, 2016 January 19, 2016 at 7:08 pm No Comments Previous Post Next Post You may also like September 12, 2016 Are you available for the Same Day Evaporative Air Conditioner Cleaning? January 20, 2016 Do you sell the duct vent, covers or grilles for the duct outlets? January 18, 2016 Do you guarantee your services?