Abstract: A device and method are disclosed for producing heated and/or cooled compressed air. The device may include a conventional air compressor, one or more filter stages to dry and purify the compressed air, a heat exchanger assembly including a heat exchanger enclosure with a heat exchange coil surrounded by ice or hot water for cooling or heating the compressed air, and an air distribution manifold to supply the temperature-controlled and filtered air to users. In a preferred embodiment, ice is used to cool the compressed air, and the cooled compressed air is supplied to protective gear worn by athletes to cool the athletes during rest periods.