A room humidifier allows you to regulate and control humidity levels in labs, offices, and other spaces. You can select a humidifier in either a single-room or multi-room. Tabletop humidifiers handle spaces up to 750 square feet and are usually just for a single room. Combination tabletop and air purifiers remove up to 99.87% of airborne particles while humidifying room air. Multiroom humidifiers handle spaces up to 2700 square feet while dispersing up to 13 gallons per day.