ECS INSTALLATIONDemolish and remove existing Fan Coil Units, C/W chilled water pipeworks, ductworks, condensate drain pipe and accessoriesDemolish and remove existing Primary Air Handling Unit (PAU) with part of its ductworks, chilled water pipes, condensate drain pipe and accessoriesDemolish and remove existing packaged unit C/W its refrigerant pipeworks and accessoriesDemolish and remove existing fans with its and ductworks and accessoriesDemolish and remove galvanized steel sheet rectangular ducts and fittingsDemolish and remove existing air grilles