For BedZED a wind-cowl system was developed to deliver preheated fresh air for each home, and to extract its vitiated air, complete with heat recovery from the extracted ventilation air.

• 对BedZED系统，一种风帽系统被用于将预先加热的空气导入房间内，同时，排出有害的废气，并在排风中进行热回收。