What is the definition of a VRF system for home? A VRF system, or Variable Refrigerant Flow, is a type of heating and cooling system that is becoming increasingly popular in the residential space. It uses an outdoor unit to cool or heat the home, and then sends the refrigerant through a network of pipes to individual indoor units. This allows for more efficient energy use, as you can control the temperature of each room or zone separately. The system has several benefits compared to traditional HVAC systems, such as decreased energy bills, improved comfort levels, and increased flexibility. Additionally, the installation costs are lower than those of conventional systems and the maintenance costs are significantly lower. The system is highly customizable and can be tailored to meet the needs of the homeowner. VRF systems are becoming a popular choice for homeowners looking to save on energy costs, as well as those looking for a more efficient and comfortable heating and cooling system.