A VRF residential system is a type of air conditioning system that uses variable refrigerant flow technology to provide efficient cooling and heating. It is an energy-efficient system that can be used to cool and heat multiple zones in a home or building. The system works by using a single outdoor unit to provide cooling and heating to multiple indoor units, each of which can be individually controlled. This allows for more precise temperature control and energy savings. The system is also quieter than traditional systems, making it ideal for residential applications. VRF systems are becoming increasingly popular in residential applications due to their energy efficiency and cost savings. They are also becoming more widely available, making them an attractive option for homeowners looking to upgrade their existing HVAC systems.