How long does the duct cleaning take ? September 29, 2014 No Comments Estimated Time on the job is between 1½ To 2½ Hrs. Previous Post Next Post You may also like March 31, 2018 Why do I need a detailed cleaning of my HVAC system? September 29, 2014 My heater does not work can you recommend a qualified tradesman? September 29, 2014 What is a normal price range for an air duct cleaning service?