... when the air temperature is -5oC, and provide 60oC hot water.Features:1. Environment friendly: no air pollution, low energy ... .4. World famous heat pump compressor;5. Suitable Places: hot water supply for Hotels, Villas, Hair Salon, Foot Massage, etc; ... hot water source for swimming pool, factory , farm, etc.6. Heating capacity: 18kw,35kw,70kw. Air Cooled Chiller Heat Pump