Product Guide Chilled Beams Chilled beams can strike the perfect balance between energy efficiency and occupant comfort. Photo: SAS International Group Behind the recommendations Related articles Behind the recommendations Related articles Chilled Beams BuildingGreen lists chilled beams, which rely on water and smaller ducts to provide HVAC throughout a building. More about Chilled Beams Active Chilled Beams: Saving Energy and Space Questioning Active Chilled Beams Energy consultant Andy Shapiro questions the energy benefits of active chilled beams; engineer Peter Rumsey responds.