A furnace split system is a type of heating and cooling system that uses a furnace to provide heat and an outdoor condenser unit to provide cooling. The furnace is usually located in the basement or attic of the home, while the condenser unit is located outside. The two units are connected by a series of ducts that distribute the air throughout the home. The furnace is responsible for heating the air, while the condenser unit is responsible for cooling it. The furnace split system is a great choice for homes that need both heating and cooling, as it is more efficient than separate systems for each. It is also more cost-effective, as the two units can be used together to provide both heating and cooling. Additionally, the furnace split system is easy to maintain, as it requires minimal upkeep and servicing.