Abstract: A heat controlled ultraviolet light apparatus includes a source of ultraviolet light, a cover, and a heating or cooling element that heats/cools the space or gap between the ultraviolet light source and the cover. Accordingly, the ultraviolet light source may be maintained at an optimal temperature thereby maximizing the efficiency of the ultraviolet light source in producing ultraviolet radiation. The apparatus may further include a temperature sensor and a control circuit to automatically control production of heat/cooling by the element based upon the ambient temperatures experienced by the ultraviolet light source during use. Methods are also provided for sanitizing heating and cooling coils of various devices such as an HVAC system, and cooling systems such as a refrigeration unit and an evaporative cooler.

Abstract: In a first aspect of the invention, an ultraviolet air sterilization device includes a housing and one or more mounts which connect to germicidal lamp units which protrude into the air stream of an air handling duct. Each lamp has an integral receptacle with an electrical connection for attachment to a source of power from within the housing. The receptacle/lamp combination provides stiffening reinforcement to the lamp. The receptacles connect to their corresponding mounts by means of a threaded connection which enables the lamp units to be easily removed from within the air handling duct. In a second aspect of the invention, a mobile ultraviolet sterilization is provided. The mobile ultraviolet sterilization device includes the sterilization device of the first aspect mounted to a mobile platform or frame. A handle is also provided enabling an operator to traverse the sterilization device over a floor covering at a desired speed.

Abstract: An ultraviolet air sterilization device includes a housing and one or more mounts which connect to germicidal lamp units which protrude into the air stream of an air handling duct. Each lamp has an integral receptacle with an electrical connection for attachment to a source of power from within the housing. The receptacle/lamp combination provides stiffening reinforcement to the lamp. The receptacles connect to their corresponding mounts by means of a threaded connection which enables the lamp units to be easily removed from within the air handling duct.