High-Performance Buildings : : Definitions : : In-Slab Radiant Heating and Cooling

In-slab radiant heating and cooling is a system to heat and cool buildings that relies primarily on radiation heat transfer. Typically, heated or chilled water is circulated though floor or ceiling panels to condition the space. Its benefits include:

• More uniform heating of the space.
• Avoids noise and drafts of air-based HVAC systems.
• lower energy consumption for fans and pumps.
• Lower air temperature, thus reducing heat loss.

Cross-section graphic:

Photograph of radiant system tubing lines during installation, McLaughlin Cluster, October 2005: