Dehumidifier

Humidifier, hyoo MIHD uh fy uhr, is a device that increases the amount of moisture in indoor air or a stream of air. It operates by allowing water… See more » Furnace is a device in which heat is produced. Some furnaces heat the air in people's homes. Others produce steam to run electric power plants.… See more » Safety valve is a device used in various mechanical systems to relieve pressure. Such systems include nuclear reactors, steam boilers,… See more »