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BMS Controls Glossary

Variable Refrigerant Flow Systems

What is the definition of a Variable Refrigerant Flow (VRF) systems? This innovative technology is quickly becoming the preferred choice for many commercial and residential HVAC applications. A VRF system is an air conditioning system that uses refrigerant to provide cooling and heating for a space or area. It uses multiple indoor units (evaporator units) to provide cooling and heating in different areas, while the outdoor unit (condenser unit) regulates the temperature. A VRF system is designed to be highly energy efficient, as it has the ability to move refrigerant to the different areas as needed, reducing energy use and providing comfortable temperatures. It also has a wide range of operational modes, such as cooling, heating, ventilation and humidity control, allowing for a greater range of comfort and energy efficiency. A VRF system is also flexible, allowing for easy installation and maintenance, and for zoning, allowing for different areas to have different temperatures. VRF systems are becoming increasingly popular due to