Duct & Vent Cleaning of America, Inc was hired to perform HVAC cleaning at the Warwick RI town hall. All ductwork within the attic area and (2) air handling units cleaned using manually cleaning methods that involved contact HEPA vacuuming the interior ductwork surfaces. Is was necessary due to the ductwork having interior lining. Any rigorous agitation would have disturbed the insulation. We took great care to ensure any of the interior insulation was not damaged during the duct cleaning project.