Abstract: Considering that the current heating and cooling technology is usually high energy consuming and low usability,seasonal cool storage technology based on ice source heat pump is proposed. By comparison of 5 cases,system model is built. Energy consumption and economic benefits are quantitatively evaluated in different districts. It is found:1)Primary energy consumption and pollutant emissions of Case 3,4 and 5 are at least 50% lower than Case 1 or 2;2)Seasonal cool storage technology can increase the yearly COP. The storage effeciency and No. of storage cycles in seasonal cool storage can reach 96% and 2.1;3)Shanghai is appropriate for ice heat pump. Beijing is appropriate for seasonal cool storage. Shenyang is appropriate for central heating system;4)For the large building more than 30000 m2in Beijing,the incremental payback period of Case 3 is only about 3 years.