AIRSYS was the the first manufacturer to develop a Wall Packaged Unit (WPU) with a variable speed compressor. AIRSYS designed the UNICOOL Unit specifically for computer and equipment environments with the cooling capacity heavily shifted toward sensible heat removal. The goal was to develop a WPU that was not only extremely energy efficient, but also made with high quality components. The UNICOOL unit is designed to withstand extreme climate zones, and has proven to be reliable due to the quality craftsmanship that went into the design of this high performance unit.