Global warming and climate change are bringing disasters to mankind 
according to all the recent studies. The office building sector is a great contributor to 
energy consumption and greenhouse gas emissions which makes it a crucial matter 
to consider energy efficiency related to the building sector. Considering energy 
efficiency in buildings and sustainability factors will result in significant energy 
reduction, environmental savings and greenhouse gas emissions reduction. The 
building envelope influences the building energy demand greatly, windows are 
important components of any building envelope contributing to daylighting mainly 
and thermal transfer partially.The research focuses on the office building design 
fascade with a pneumatic modular system as adaptive to enhance daylighting and 
energy consumption by putting guidelines to the designer to use this system well in 
the office building, the research focuses to analyse two case studies with three stages 
to achieve the effect of pneumatic modular fascade in the office building