air source heat pump for heating, cooling and hot water(waste heat recovery) capacity: 5kw-68kw EVI scroll compressor air source heat pump for heating, cooling and DHWwith EVI compressor for -20 degree weather.capacity: 10kw-60kwRefrigerant: R407C, R410A, R417A, friendship to environment.Specially low noise design, less 10dBA than normal design.