The APP of Heat energy scientific and technological water system is a software of solutions and designed drawings for the product of solarair-resource heat pumpcommercial gas boiler water heating system. It can automatically provide a hot water solutions for the required project according to different kinds of buildingsthe volume of hot waterthe way of heating and the feature of regional climate and combined with the relative National standard. It contains the solutions and designed drawing of new solar hot water systemindividual air-source heat pump systemindividual commercial gas boiler hot water systemsolar with air-source heat pump system and solar with commercial gas boiler system and air-source heat pump with commercial gas boiler system.