The invention relates to heating and domestic hot water integrated equipment. The heating and domestic hot water integrated equipment comprises an air source heat pump, a heat preservation water tank,a coiled tube type heat exchanger, a temperature controller, heating equipment, an underfloor heating circulating water pump, domestic water equipment, a return water temperature sensor, a return water circulating water pump, a water tank temperature sensor and a cold water inlet. The heating and domestic hot water integrated equipment is reasonable in overall structural design, the air source heat pump heats water in the heat preservation water tank, high-temperature hot water on the upper portion in the heat preservation water tank can be used by the domestic water equipment, middle-temperature hot water on the lower portion in the heat preservation water tank is used by the coiled tube type heat exchanger for heat exchange, heating can be guaranteed, and thus a system meets the needs for domestic hot water and heating at the same time. Cost is reduced, space is saved, and control and use are convenient. In addition, the underfloor heating circulating water pump and the water tank temperature senor guarantee that the domestic hot water is heated preferably in time, the need for the domestic hot water is met, the return water temperature sensor and the return water circulating water pump guarantee that the domestic hot water is instantly heated, and cold water returns into the heat preservation water tank in time.