The definition of a commercial HVAC humidity control is a system that helps to regulate the humidity levels in a commercial building. It is an important part of the HVAC system as it helps to maintain a comfortable environment for occupants and helps to protect the building’s structure and contents from damage due to high humidity. Commercial HVAC humidity control systems use sensors to monitor the humidity levels in the building and then adjust the HVAC system to maintain the desired humidity level. This can be done through the use of dehumidifiers, humidifiers, and other humidity control devices. The system can also be programmed to respond to changes in outdoor humidity levels, such as during a rainstorm. By maintaining the proper humidity levels, commercial HVAC humidity control systems help to reduce energy costs, improve indoor air quality, and reduce the risk of mold and mildew growth.