Hitachi Small to Medium-Sized Gas/Oil-Fired Absorption Chiller-Heater New Koala EX Series Gas/Oil-Fired Absorption Chiller-Heater "New Koala" EX Series Cooling Tower Combination Type Gas/Oil-Fired Absorption Chiller-Heater "New Koala Pack" EX Series Hitachi's proven high-efficiency combustion technology and earnest desire to conserve the global environment together have brought about the next generation of chiller-heater the "New Koala EX Series". The EX Series does not use any CFC and is quiet & energy-efficient. Hitachi has attained the COP of 1.05 (with city gas/LPG) with its small to medium-sized chillers (up to 352 KW) [10% saving of energy compared with the conventional models] and cleared the stringent NOx emission standard [less than 30ppm (with city gas)]. Featuring easy operation, high controllability and good maintainability,the EX series represents chiller-heaters of the 21st century that incorporates Hitachi's advanced technologies. Centrifugal Chiller Centrifugal Chiller HC-F E Series and GX Seriesz Absorption Chiller-Heater Absorption Chiller V Series New Koala EX Series Super Large Tonnage Absorption Chiller