Abstract: An air disinfecting system for use in an enclosed space is disclosed. The system includes an air chamber having an inlet end and an outlet end, a check valve at the inlet end, an LED array comprising at least one UVC LED light within the air chamber, a fan to move air through the air chamber, and a controller to control operation of the at least one UVC LED light and the one fan.

Abstract: A breathing protective device including a breathing hose manifold, a dual-chamber sterilization portion including at least one UVC LED lamp, and an end cap. Further disclosed embodiments include, a divider separating the dual-chamber sterilization portion into an intake chamber and an exhaust chamber, an intake check valve in fluid communication with the intake chamber and an inhale port on the breathing hose manifold, an exhaust check valve in fluid communication with the exhaust chamber and an exhale port on the breathing hose manifold, at least one UVC LED lamp in the intake chamber, and at least one UVC LED lamp in the exhaust chamber.