暖通空调(采暖, 通风, and 空调) uses various technologies to regulate the temperature, 空气质量, and humidity in an enclosed area. There is a lot of money to be made in green efforts by businesses. Saving money and the environment are top priorities for the majority of people. 作为一个结果, there has been an increase in demand for eco-friendly HVAC systems, including the utilization of solar panels, 风力涡轮机, and other eco-friendly choices to save energy costs.