ILS humidifier by steamOvap is a live steam humidifier using steam from a central steam boiler. It is conditioning and distributing steam in your air handling unit (or air duct). ILS humidifier is available in 3 different models: ILS-P with horizontal steam ramp and pre-heat jacket, ILS-SO with steamOsorb vertical steam ramps or ILS-SE with high efficiency steamOsorb vertical steam ramps.