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 at 7:08 pm No Comments Previous Post Next Post You may also like January 16, 2016 Can you take care of animal intrusion too? April 12, 2017 Why duct cleaning is important? January 27, 2016 Can you clean cooking exhaust systems too?