A 4 head split system is a type of air conditioning system that is made up of four individual units. Each unit is responsible for cooling a specific area of the home, and they are connected to a single outdoor unit. This type of system is ideal for larger homes that need to be cooled in multiple areas, as it is more efficient than a single unit system. It also allows for more precise temperature control, as each unit can be set to a different temperature. The four head split system is an efficient and cost-effective way to keep your home comfortable all year round. It is also easy to install and maintain, making it a great choice for homeowners who want to save money on their energy bills.