A split air conditioner indoor unit is a type of air conditioning system that is designed to cool the air inside a home or other enclosed space. This type of air conditioner is made up of two separate units, an outdoor condenser and an indoor evaporator. The outdoor condenser unit is responsible for collecting heat from the outside air and transferring it to the refrigerant inside the unit. The refrigerant is then circulated through the indoor evaporator unit, where it absorbs heat from the air inside the home and transfers it outside. The cooled air is then distributed throughout the home. Split air conditioners are a great choice for those who want to keep their home comfortable without having to worry about the noise of a traditional window unit. They are also energy efficient and can help reduce energy costs.