Three coil electric heat pump

A method for defrosting the outside heat exchanger coils of a three coil electric heat pump, comprising the steps of:

• (1) providing a compressor,
• (2) providing an inside heat exchanger coil,
• (3) providing a first outside heat exchanger coil, and a second outside heat exchanger coil disposed in heat exchange relation one to the other, wherein said first outside heat exchanger coil and said second outside heat exchanger coil are connected by a fluidic piping to each other and to said inside heat exchanger coil, and to said compressor,
• (4) operating said inside heat exchanger coil as a condenser, and said second outside heat exchanger coil as an evaporator while switching said first outside heat exchanger coil from operating as an evaporator to operating as a condenser for a period of time sufficient to defrost said first outside heat exchanger coil, in a manner that will cause heat discharged by said first outside heat exchanger coil to be reabsorbed into the same refrigeration circuit within the heat pump system via said second outside heat exchanger coil therefore improving the quality of heat discharged by said inside heat exchanger coil, and
• (5) operating said inside heat exchanger coil as a condenser, and said first outside heat exchanger coil as an evaporator while switching said second outside heat exchanger coil from performing as an evaporator to operating as a condenser for a period of time sufficient to defrost said second outside heat exchanger coils, in a manner that will cause heat discharged by said second outside heat exchanger coil to be reabsorbed into the same refrigeration circuit within the heat pump system via said first outside heat exchanger coil therefore improving the quality of heat discharged by said inside heat exchanger coil.