The production environment and conditions of water source heat pump manufacturers directly affect the lifespan of water source heat pump units. According to available information, the lifespan of these units can last over 15 years. The system design of water source heat pump units is simple and relies on automation technology for control, allowing for completely unmanned operation. Greater energy efficiency and environmental friendliness, along with better heating and cooling effects, have always been the direction of air conditioning technology development. In northern China, traditional winter heating has used coal-fired boilers, which consume non-renewable resources and produce greenhouse gases such as carbon dioxide, as well as toxic gases during use; while in southern China, there are single water-cooled units. Lithium bromide units and air-cooled units appeared after the 1980s, presenting a diversification of cooling unit methods, with gradually increasing unit capacities. With national policy support, sustainable development, and enhanced public environmental awareness, more manufacturers are beginning to explore and develop new types of energy-saving and environmentally friendly cooling and heating equipment, and users are also choosing towards energy-saving options. The use of water heat pumps represents a change in how people utilize energy structures. Related thematic articles: Brand hype.