Abstract: With the popularization of air conditioning, demand-side response and management for summer air conditioning loads are attracting increasing attention.Water-storage air conditioner, as a high efficiency and clean recycling utilization cooling technology, has excellent economic and social benefits.Based on the summary of the economic research of water-storage air conditioning systems, this study puts forward an economic model of water-storage air conditioner with cost analysis.An example of a water-storage air conditioner project in an office area in Hebei is selected to carry out empirical analysis, the result of calculation shows that water-storage air conditioner has excellent economic and social benefits.