1. HVAC system can adjust the indoor temperature and humidity as people need, so that people can have a comfortable living and working environment in different seasons and weather conditions.

2. HVAC system can provide fresh air, as it can circulate air and purify the air through the equipment to remove indoor pollutants and odors so as to provide fresh and clean indoor air.

3. Energy saving and environmental protection. HVAC systems can effectively control indoor temperature and humidity, reduce energy consumption, save energy, and reduce the impact on the environment.

4. Easy to install and use. HVAC system installation and maintenance is more convenient, as users can adjust and control it according to their needs.

5. Wide applicability. HVAC systems are suitable for all kinds of building places, such as residential buildings, office buildings, commercial centers, hospitals, schools, etc., to meet the air-conditioning needs of different places.

6. Separate control can be performed as required. HVAC system can be controlled according to the needs of different areas. It can have separate temperature and humidity control in different areas, as well as improve energy efficiency.

7. It can be integrated with other devices. HVAC systems can be integrated with other building equipment (such as lighting, hot water supply, etc.) to achieve overall intelligent and automated management.