As indicated by its name the Humidifier Mist Fountain works by increasing the humidity and moisture in the air around us that we breathe in. It helps in combating dehydration from the air-conditioning; that is why certain humidifiers are connected to central air conditioning in the house. These are also used by people who employ it for aromatherapy, the mist in that case may have volatile oils said to relieve specific afflictions.
The markets have different models of these humidifier mist fountains available. Some are portable room units, whereas others are integrated in HVAC. Consider models with additional features. Ones that can monitor relative humidity are advisable. A quiet model, as well as an energy efficient is what you need.