<;P>;PROBLEM TO BE SOLVED: To provide an air conditioner for agriculture capable of installing an indoor unit in a house for plant cultivation, and reducing costs of the air conditioner as a whole. <;P>;SOLUTION: This air conditioner for agriculture to condition the air inside of the house 1 for plant cultivation used in cultivating plants and the like, is composed of an outdoor unit 10 installed outside of the house 1 for plant cultivation, and selecting and using an outdoor unit used for a capacity of one of a series of air conditioners by each capacity as an air conditioner for a living room, and the indoor unit 50 installed inside of the house 1 for plant cultivation, connected with the outdoor unit 10 by refrigerant piping 7 to perform an air-conditioning operation, and selecting and using the outdoor unit used for the capacity same as or smaller than the outdoor unit selected from the series of air conditioners. <;P>;COPYRIGHT: (C)2010,JPO&INPIT