Passive design does not require mechanical heating or cooling. Buildings that are passively designed take advantage of natural climate to maintain thermal comfort. Incorporating the principles of passive design in building is significantly improves comfort, reduces or eliminates heating and cooling bills, reduces greenhouse gas emissions from heating, cooling, mechanical ventilation and lighting.

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Sustainability is important due to the effort to maintain earth resources for future generation usage. The organisms such as animals, plants and more can continue to survive. Climatic changes affect how nature behaves and increase the sea level gradually. To prevent more and more such consequences occur, we have to try maintain the resources, recycle and reduce the usage such as we can use recycled building material in our building and more.

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Climatic design can facilitate an increase in the energy efficiency of buildings. The reduction of energy usage help reduce the environmental effect to earth. It is very important due to the long-term usage hence we have to take serious consideration. Maximise cooling air effect hence not require any mechanical cooling while maintaining thermal comfort of the spaces. The roof window, wall, floor and internal wall component all affect the heat conductivity into the space. The U value of the materials made up of the component affect the thermal comfort of the spaces. finding the suitable materials hence important. ​The shading device need to be effective and oriented to the right direction to enable effective shading occur.