... -saving: 1). Air-Source Water Heater use heat energy from air(including heat recovery and via compressor work produceing more ... work process it will not produce watse, no pollution, heat pump 4). They delivery fresh air to people to make ... coordinate with Copenhagen conference. Low carbon, low exhaust, heat pump 2. Air source heat pump uniques: 1). Janpanese Panasonic or American Copeland compressor. ...