What is a common application of electric radiant heating?

Electric radiant heating is commonly used for heating floors in both residential and commercial buildings due to its efficiency and comfort. The principle behind radiant heating is that it warms objects and surfaces in a room rather than just the air. When installed under floors, it provides uniform heat, making spaces feel warmer without needing to raise the air temperature significantly. This type of heating offers several advantages, including energy efficiency, reduced dust circulation, and the ability to maintain a constant temperature at a comfortable level.

In contrast, other options provided involve different heating methods or not as direct applications of electric radiant technology. Heating water in residential buildings typically uses electric water heaters, while heating air in duct systems refers to forced air systems. Heating swimming pools involves a different type of system altogether, primarily focusing on water heating rather than surface level heating.