The world's first dual tank solar energy and water cycle air can be the perfect combination, with the sun, make full use of solar heating, in the rainy days, winter sunshine is insufficient, can automatically switch the air auxiliary heating, thus realizing the 365 days and 24 hours all-weather hot water supply. Solar water tank with double tank liner design unique, air can work only when the water tank heating and can manifest, private customized according to the user demand of hot water, hot water heating how much water. The design of double tank of the water tank can reduce the working time of the air to the host. At the same time, the top water diversion technology is adopted in the double cabin, the water temperature is more stable, and the water consumption is more sufficient.