Noun

1. Heating of rooms within buildings.
   • 1973: US Congress: House Committee on Science and Astronautics: Subcommittee on Space Science and Applications, Energy Research and Development and Space Technology: Hearings Before the Subcommittee - The use of fossil fuel resources for electric space heating has been questioned.
   • 2003: Anthony R Day et al, Heating Systems: Plant and Control - In many regions of the world buildings will require space heating systems to make them habitable.
   • 2004: Mat Santamouris, Energy Rating Of Residential Buildings: A Practical Guide for Energy Rating and Efficiency - The energy required for space heating is heat that is delivered from heating units to the heated space during the heating season.