To make equipment small in size and also to lessen power for carriage by using a heating medium such as cold-hot water.

In this equipment, a primary-side circuit 1A for cooling or heating a secondary-side heating medium is formed and a circulation circuit 30 is constructed by connecting sequentially a pump 31 for carrying the secondary-side heating medium and an indoor heat exchanger 32 making the secondary-side heating medium and indoor air exchange heat between them. The indoor heat exchanger 32 is formed to have a constitution wherein the secondary-side heating medium and the indoor air become flows opposite substantially at least so that the temperature efficiency be 50% or above and that an outlet-inlet temperature difference of the secondary-side heating medium be 10°C or above.