What is the definition of a mini-split heating and cooling system? A mini-split heating and cooling system is an efficient and cost-effective way of delivering temperature-controlled air in both residential and commercial settings. It consists of an outdoor condenser unit and one or more indoor air handlers. The condenser unit contains the compressor, condenser coil, and fan, while the indoor air handler contains the evaporator coil and fan. The condenser unit is connected to the indoor units via refrigerant tubing, allowing for efficient heating and cooling of the space. Unlike traditional central air conditioning systems, mini-split systems are much more versatile because they can be used to heat and cool single rooms or multiple rooms at once. They also require less complicated installation as they don’t require ductwork. Additionally, mini-split systems are quiet, energy-efficient, and provide more precise temperature control. As a result, they are becoming increasingly popular among homeowners and businesses alike.