The Adirondack-Aire 16 Series zerOzone chassis provides environment friendly, high efficiency cooling and heating where individual, quiet control is a priority. This application flexible unit is also a direct replacement for American Air Filter Enersaver Type 16 and Type 16 Hydronic, IslandeAire 16 and RetroAire RC-10 chassis. The chassis is a part of a complete system, which consists of the chassis, wall sleeve, outdoor louver, room cabinet, and sometimes a heat section. The chassis contains the compressor, indoor and outdoor heat exchangers, fan motors and fans, and controls.