A radiator humidifier is a humidifier that attaches directly to a radiator. These humidifiers circulate warm, humidified air around the home and can help control temperature levels.
A radiator humidifier is attached to the front or the side of a radiator and has a reservoir that holds water. The water turns to steam from the heat of the radiator, and the steam is released into the air to humidify the room. Radiator humidifiers are rarely sold on the market in 2015. Instead, electric humidifiers are sold that can sit on any surface and be moved from room to room to moisten the air.