According to “District heating and cooling systems” (2013), it stated that ENGIE aims to relieve the needs of the public and conserve nature by reducing carbon dioxide emission. ENGIE earn recognition as the “world’s largest independent provider of urban cooling networks” and is slowly broadening its network to all over the world. Currently, they are managing 320 systems globally and can be seen in Paris, the USA and even in Malaysia. This article focuses on two systems, heating and cooling. The heating system focuses on warming up the building or city with the help of hot water and surcharge steam. However, the cooling network supplies cold water to the air conditioning system. Both systems help in conserving nature. The heating system uses available resources for heat generation while the cooling system uses lesser electricity and water and most importantly, releases lesser carbon dioxide.