The humidifier works by increasing the moisture in a space. It is possible to humidify a small room as well as the entire building by connecting to HVAC system. A large humidifier is often incorporated into a larger HVAC system in commercial or industrial settings. Industrial ultrasonic humidifier is used to maintain a certain humidity level with different purposes, like preserving the properties of materials, and maintaining a comfortable and healthy environment. The humidifier used in printers and paper industries stop shrinkage and paper curl. Refrigerated rooms need such equipment to preserve freshness against the drying effects of hot temperatures.