Blue Star Limited operates as a heating, ventilation, air conditioning and commercial refrigeration company. The company operates through three segments: Electromechanical Projects and Commercial Air Conditioning, Integrated Products, and Professional Electronics and Industrial Systems. Its Electromechanical Projects and Commercial Air Conditioning Systems segment includes central air conditioning projects, electrical contracts and packaged air conditioning business, including manufacturing and maintenance services. Its Unitary Products segments include refrigeration equipment, cold storage products, including manufacturing and maintenance services. Its professional electronics and industrial systems segments include sales and services of test machines, analysis, test and measurement equipment, industrial products and systems. The company also exports its products to 18 countries in the Middle East, Africa, South Asian Association for Regional Cooperation (SAARC) and other regions.