Household cold and heat central unit

The utility model of a household cold and heat central unit is composed of a cold and heat center host machine 1 with the functions of indoor cooling, heating and providing hot water, a heat exchanging water tank 2, and a plurality of fan coils 3 installed indoor. The heat exchanging water tank 2 connected with the hot water heating interface 4 of the household cold and heat center host machine 1, and the fan coils 3 connects with the room temperature adjustment interface 5 of the household cold and heat center host machine 1. Cool air, hot air and hot water can be provided according to the requirements of the user, the hot water can be got in the state of non-cooling state with a small amount of electricity, and the electricity saving rate can reach 50%-80% according to the environmental temperature. The utility model has a small size with only one unit, complete function, compact structure and low cost.