A sterilization apparatus for sterilizing air includes an outer housing having side walls extending between opposed bottom and top walls that, together, define an outer chamber. An inner housing is situated in the outer chamber and includes opposed top and bottom ends and having a wall structure that defines a sealed inner chamber extending therebetween. The wall structure includes at least one side wall that defines a transparent window. An inlet port is in communication with one end of the inner chamber and that directs unsterilized air into the inner chamber. An ultraviolet (“UV”) light source is positioned outwardly adjacent the window and configured to emit UV light through the window and into the inner chamber when energized so as to sterilize air in the inner chamber. An outlet port is in communication with another end of the inner chamber that directs sterilized air downstream from the inner chamber.
