Abstract: An exhaust hood cleaning system for commercial kitchen installations, having a wash control cabinet connected to one or more exhaust hoods over cooking appliance ranges, where each exhaust hood includes a spraying array subsystem within the exhaust hood and a fogging subsystem within the connected flue for the exhaust hood. The exhaust hood cleaning system is electronically controlled, receiving input instructions from any one or combination of an operator interface, fire suppression systems of the building in which the system is installed, and environmental control systems of the building in which the system is installed.