A 12 ton HVAC unit is a type of air conditioning system that is designed to cool large commercial or industrial spaces. It is capable of cooling up to 12 tons of air per hour, making it an ideal choice for large spaces such as warehouses, factories, and other large commercial or industrial buildings. This type of unit is usually installed in the ceiling or on the roof of the building, and it is connected to a network of ducts and vents that distribute the cooled air throughout the building. The unit itself is composed of a condenser, evaporator, compressor, and other components. The condenser is responsible for removing heat from the air, while the evaporator cools the air and the compressor compresses the cooled air before it is distributed throughout the building. This type of unit is very efficient and can help to reduce energy costs significantly. Additionally, it can help to improve air quality in the building, as it removes dust, pollen, and other airborne particles from the air.