Inside the World’s Largest Cooling Stations in Makkah

The world’s largest cooling plant of its kind was installed in Makkah’s Grand Mosque in 2021 as part of Saudi Arabia’s efforts to provide high-quality services to visitors and pilgrims of the Holy Mosques using the latest technologies, ensuring that worshipers perform their rituals in a cool and fresh atmosphere inside Al-Haram.

Using ultraviolet light air purification technology, the General Presidency for the Affairs of the Two Holy Mosques works to ensure fresh air inside the Grand Mosque. Before letting the well-treated fresh air into the mosque, the filtration process is repeated nine times a day.

The air filtration procedure, which ensures 100 percent air purity, involves three stages: moving air into filters using fans, capturing pollutants and particles and then pushing back clean air into space.


Inside the Grand Mosque, there are two cooling stations that are the world’s largest: the Ajyad station, which produces 35,300 refrigeration tons, and the Shamiyah station, also known as the new central station, which has a capacity of 120,000 tons of refrigeration.

The central station, Al-Shamiyah, is serving the Third Saudi Expansion as well as half of Mas’a (area for the ritual of Sa’i between Safa and Marwa). This station will feed all facilities of the Grand Mosque in the future, according to Saudi officials.


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