A system for providing clean, thermally-controlled air to a patient for the prevention of hypothermia, the system comprising: a particulate filter apparatus (145, 270); a UV LED air sterilization apparatus (100, 200) that includes an airflow and irradiation management chamber (140, 210); a heater apparatus (130,286); a blower apparatus; an electronics and control module (110, 288); a flexible hose apparatus; and an inflatable thermal patient covering apparatus, wherein the system provides the clean, thermally-controlled air to the patient by: drawing air through the particulate filter apparatus (145, 270); exposing the air to UV radiation in the UV LED air sterilization apparatus (100, 200), wherein a plurality of UV LEDs are electrically connected to the electronics and control module (110, 288) and fixedly attached to a plurality of mated openings (261, 461) longitudinally disposed in the wall of the airflow and irradiation management chamber such that the plurality of UV LEDs irradiate the inner surface (240, 450) of the airflow and irradiation management chamber without impeding airflow through the airflow and irradiation management chamber; heating the air in the heating apparatus (130, 286); and expelling the heated and exposed air by the blower apparatus through the flexible hose apparatus into the inflatable thermal patient covering apparatus, wherein the airflow and irradiation management chamber comprises one or more turbulators configured to create one or more area of turbulent airflow. a particulate filter apparatus (145, 270); a UV LED air sterilization apparatus (100, 200) that includes an airflow and irradiation management chamber (140, 210); a heater apparatus (130,286); a blower apparatus; an electronics and control module (110, 288); a flexible hose apparatus; and an inflatable thermal patient covering apparatus, wherein the system provides the clean, thermally-controlled air to the patient by: drawing air through the particulate filter apparatus (145, 270); exposing the air to UV radiation in the UV LED air sterilization apparatus (100, 200), wherein a plurality of UV LEDs are electrically connected to the electronics and control module (110, 288) and fixedly attached to a plurality of mated openings (261, 461) longitudinally disposed in the wall of the airflow and irradiation management chamber such that the plurality of UV LEDs irradiate the inner surface (240, 450) of the airflow and irradiation management chamber without impeding airflow through the airflow and irradiation management chamber; drawing air through the particulate filter apparatus (145, 270); exposing the air to UV radiation in the UV LED air sterilization apparatus (100, 200), wherein a plurality of UV LEDs are electrically connected to the electronics and control module (110, 288) and fixedly attached to a plurality of mated openings (261, 461) longitudinally disposed in the wall of the airflow and irradiation management chamber such that the plurality of UV LEDs irradiate the inner surface (240, 450) of the airflow and irradiation management chamber without impeding airflow through the airflow and irradiation management chamber; heating the air in the heating apparatus (130, 286); and expelling the heated and exposed air by the blower apparatus through the flexible hose apparatus into the inflatable thermal patient covering apparatus, wherein the airflow and irradiation management chamber comprises one or more turbulators configured to create one or more area of turbulent airflow.