What type of heating system uses hot water or steam?

Hydronic heating is a system that utilizes water or steam to distribute heat throughout a building. This method involves heating water in a boiler, which then circulates through pipes to radiators or floor heating systems. The heat from the water or steam radiates into the surrounding space, providing a consistent and comfortable temperature.

One of the key benefits of hydronic heating is its efficiency and the ability to maintain a steady heat output. Because water has a high thermal mass, it can store and transfer heat effectively, minimizing the energy needed to maintain comfortable temperatures. This makes hydronic systems especially suitable for larger spaces or areas requiring a more uniform heat distribution.

In contrast, systems like electric heating rely on electrical resistance to generate heat, while forced air heating uses a furnace to heat air that is then blown through ducts. Each of these systems operates on different principles and mechanisms, highlighting why hydronic heating stands out for its use of water or steam as the heating medium.