A HVAC split system is a type of heating, ventilation, and air conditioning (HVAC) system that is composed of two distinct components: an outdoor unit and an indoor unit. The outdoor unit is responsible for transferring heat from the outside air to the indoor air, while the indoor unit is responsible for circulating the air within the home. This type of system is ideal for homes that have limited space, as the two components can be installed separately. The outdoor unit typically consists of a compressor, condenser, and fan, while the indoor unit typically consists of an evaporator, blower, and filter. Together, these components work to provide the home with a comfortable temperature and air quality. The outdoor unit is usually installed on the roof or outside wall of the home, while the indoor unit is typically installed in the attic or basement. This type of system is energy efficient and can help to reduce energy costs.