Do you guarantee your work ? September 29, 2014 No Comments I have a Customer Satisfaction Policy if you are not satisfied, I will re-clean your duct system free of charge. Previous Post Next Post You may also like September 29, 2014 Do you sell filters for the return air vents? May 18, 2015 Do you provide duct replacement services? September 29, 2014 How often should residential HVAC systems be cleaned?