A commercial 5 ton AC unit is a type of air conditioning system that is designed to provide cooling for larger commercial spaces such as office buildings, warehouses, and other large-scale facilities. This type of system is typically much larger than residential AC units, and it is capable of cooling much larger areas. The cooling capacity of a commercial 5 ton AC unit is measured in British Thermal Units (BTUs). This is the amount of energy required to cool a space of one ton of air. The higher the BTU rating, the more powerful the AC unit is. Commercial 5 ton AC units are designed to be more efficient than residential AC units, as they are able to cool larger areas with less energy. Additionally, they are designed to be more durable and last longer than residential AC units.