A heat pump split unit is a type of air conditioning system that is designed to both heat and cool a space. It works by transferring heat from one area to another, either from the outside air to the inside of a building or from the inside of a building to the outside air. The heat pump split unit consists of two main components: an outdoor unit and an indoor unit. The outdoor unit contains the compressor, condenser, and fan, while the indoor unit contains the evaporator, blower, and air filter. The heat pump split unit is an efficient and cost-effective way to both heat and cool a space, as it uses the same amount of energy to heat and cool a space, thus reducing energy costs. Additionally, the heat pump split unit is relatively quiet and does not require a lot of maintenance.