Features of the heat pump water heater 1) High efficiency and energy saving, electricity cost is only 1/4 of electric water heater 2) Automatic microcomputer control, operate properly all the year round and will not be influenced by the climate 3) World top brand compressor for heat pump—Wanbao compressor (the company has two joint ventures with Panasonic and Hitachi) 4) Automatic defrosting, continuously provide hot water even in cold areas 5) No waste heat, exhaust gas, waste residue, no pollution to the environment 6) Operating temperature: -8℃ to 45℃ 7) Water tank: 100L, 150L, 200L, 250L, 300L