Duct cleaning: Work includes cleaning entire lineal length of ductwork including drops and rises, cleaning any internal components associated with the ducts (such as fire dampers, sound attenuators, turning vanes, volume dampers) removing andcleaning/disinfecting all grilles and registers (vent covers).

Duct cleaning generally refers to the cleaning of various heating and cooling system components of forced air systems, including the supply and return air ductsand registers, grilles and diffusers, heat exchangers heating and cooling coils, condensate drain pans (drip pans), fan motor and fan housing, and the air.