Abstract: This invention pertains to a heat exchange system having a space heating, a space cooling and an independent water heating cycle. During the space heating and space cooling cycles a refrigerant is used to transfer heat by circulating between a condenser/evaporator and a heat exchanger, the refrigerant being evaporated and condensed in the process. During the independent water heating cycle a third heat exchanger is used to condense the refrigerant. The heat removed by this exchanger is used for the evaporating of the refrigerant. A fourth heat exchanger is provided for water heating. Either water pumped from an outside source or outside air may be used as a heat source and sink.

Abstract: An environmental control system controlling an air cooling means, a heat reclaiming means, fresh air supply, auxiliary heaters when necessary, and temperature and humidity sensors, all of which are coordinated by an environmental control panel. The panel would in addition to providing temperature regulation also control the humidity by overcooling the air by the A.C. reducing humidity and then using the reclaimed heat and/or auxiliary heat to heat the air to a desired level and would utilize individual-temperature calibrated-sensors to achieve exact control of steps signaled from control panel to heating and cooling equipment.