You can go to the local second-hand recycling market. There are also second-hand air energy air conditioners, that is, air conditioners, which refer to devices that manually adjust and control the temperature, humidity, flow rate and other parameters of ambient air in buildings or structures. Comprises a cold source/heat source device and a cold and hot medium transmission and distribution system.

Shijiazhuang Shiyan Technology Co., Ltd. Shijiazhuang Shiyan Technology Co., Ltd., a second-hand commercial air energy project, is a company specializing in the collection and sales of large central air conditioning and refrigeration equipment. Annual recycling and sales of major brands of refrigeration equipment, including water source heat pumps, second-hand central air conditioners and second-hand air energy. This project refers to transforming existing entities (natural or artificial) into artificial entities with expected use value by using relevant scientific knowledge and technical means according to a set of envisaged goals.