Specifications include, but are not limited to:1) The Contractor shall be responsible for the removal of visible surface contaminants anddeposits from within the HVAC system in strict accordance with these specifications.2) The HVAC system includes any interior surface of the facility’s air distribution system forconditioned spaces and/or occupied zones. This includes the entire heating, air-conditioning and ventilation system from the points where the air enters the system tothe points where the air is discharged from the system. The return air grilles, return airducts to the handling unit (AHU), the interior surfaces of the AHU, mixing box, coilcomponent, condensate drain pans, humidifiers and dehumidifiers, supply air ducts,fans, fan housing, reheat coils and supply diffusers are all considered part of the HVACsystem. The HVAC system may also include other components such as dedicatedexhaust and ventilation components and make-up air.