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 September 29, 2014 Can we use our heater straight away after it has been cleaned? September 29, 2014 How much dust accumulates in a central heating system? March 12, 2015 Do you perform ducted heating repairs in Melbourne?