A system for providing air conditioning to a living space and heating potable water. The system comprising a heat pump circuit comprising a compressor for circulating a refrigerant around the heat pump circuit, a first condenser, a second condenser and an evaporator. The evaporator being adapted to receive a first flow of air from an air inlet to transfer heat from the first flow of air to the refrigerant. The first condenser being adapted to receive a flow of water to transfer heat from the refrigerant to the water. The second condenser being adapted to receive a second flow of air to transfer heat from the refrigerant to the second flow of air. The first flow being provided from the evaporator to a living space by an air outlet.

An energy transfer unit for a geothermal system includes an outer housing. A heat exchanger is located within the housing. An inlet pipe extends from the housing to the heat exchanger to convey heat transfer fluid to the heat exchanger and an outlet pipe extends from the housing to the heat exchanger to convey heat transfer fluid from the heat exchanger.

A system for selectively heating and cooling including a three-way heat exchange apparatus, a source apparatus for selectively heating and cooling a source fluid, a phase change material for selectively storing heating and cooling potential, and a distribution apparatus for selectively distributing heating and cooling a distribution fluid, wherein the three-way heat exchange apparatus is connected to the phase change material by an interface between the heat exchange apparatus and the phase change material.

A system for providing air conditioning to a living space and heating potable water. The system comprising a heat pump circuit comprising a compressor for circulating a refrigerant around the heat pump circuit, a first condenser, a second condenser and an evaporator. The evaporator being adapted to receive a first flow of air from an air inlet to transfer heat from the first flow of air to the refrigerant. The first condenser being adapted to receive a flow of water to transfer heat from the refrigerant to the water. The second condenser being adapted to receive a second flow of air to transfer heat from the refrigerant to the second flow of air. The first flow being provided from the evaporator to a living space by an air outlet.

Systems and methods are disclosed that include providing a hybrid heat pump system with a heat pump connected in fluid communication with an outdoor unit and a ground heat exchanger via a plurality of valves. The hybrid heat pump system also includes a system controller that selectively configures the plurality of valves to alter a fluid flow path through at least one of the outdoor unit that exchanges heat between a fluid carried by an outdoor heat exchanger of the outdoor unit and ambient outdoor air and the ground heat exchanger that exchanges heat between the fluid carried by the ground heat exchanger and the ground in order to maximize heat transfer efficiency between the fluid and the ambient outdoor air and/or the ground based on various temperatures measured by the hybrid heat pump system.

A multi-split air or ground source heat pump system designed to provide a residential application with space heating and cooling, along with supplemental hydronic heating and potable water preheating. The supplemental hydronic heating supports applications like radiant floor heating and heating swimming pools. Commercially, the multi-split air or ground source heat pump system expands on this technology to incorporate comfort and/or process heating, cooling, and hydronic heating applications utilizing multiple types of energy sources.

A hybrid heat pump system comprise a geothermal heat pump system, an air source heat pump system, and a buffer heat-storage configured to exchange a heat with the geothermal heat pump system and the air source heat pump system and to store therein the exchanged heat. The buffer heat-storage comprises fluid circulation lines fluid-coupled to and between an air heater and the buffer heat-storage to realize a circulation of a refrigerant fluid therebetween, which receives a heat energy from the buffer heat-storage, wherein the air heater is configured to heat the air thereto from an outdoor using the refrigerant fluid.