The increasing fossil energy demand and carbon emissions pose a significant challenge to the world. According to climate adaptability design, the balcony is open type in Changsha. The study evaluates the energy-saving potential and the economic and environmental feasibility of installing the balcony in living rooms, and considering the effect of balcony orientations and air conditioning types. The economic viability is analyzed using the construction cost of the balcony and the extra market price of a residence with a balcony paid by the holder, respectively. Environmental feasibility assessment mainly adopts the CO₂ emission payback period as the index. The annual electricity saving percentage of the split-type air conditioner in the living rooms facing four orientations with a balcony is in between 6.7% and 12.3%. And the balcony's investment payback period facing east or west orientation is less than 50 years based on construction cost. It has better environmental benefits with the CO₂ emission payback period of the balcony facing four orientations is in between 10.4 and 24.6 years. Considering a living room constructed with a balcony, it is not feasible for dwellers to use a gas boiler, adopting the radiant floor system during the heating from the perspective of economic and CO₂ emission.

化石能源需求和碳排放量的不断增长对世界构成了重大挑战。根据气候适应性设计，阳台在长沙是开放式的。该研究评估了节能潜力以及在客厅中安装阳台的经济和环境可行性，并考虑了阳台朝向和空调类型的影响。使用阳台的建造成本和持有人支付的带有阳台的住宅的额外市场价格来分析经济可行性。环境可行性评价主要采用CO ₂排放回收期为指标。在带阳台的四个方向的客厅中，分体式空调的年节电百分比在6.7％至12.3％之间。从建筑成本的角度来看，阳台朝东或朝西的投资回收期不到50年。面向四个方向的阳台的CO ₂排放回收期在10.4至24.6年之间，因此具有更好的环境效益。考虑到带有阳台的起居室，从经济和CO ₂排放的角度来看，居民使用燃气锅炉是不可行的，采暖时采用辐射地板系统。