Variable refrigerant flow (VRF) technology is gaining ground as one of the fastest growing segments in the HVAC industry. Invented in by Daikin in Japan in 1982 and commonly used throughout Europe and -Asia, building owners and facility managers here in the U.S. are recognizing the many benefits of VRF systems, which can efficiently and simultaneously heat and cool separate spaces in the same building.
VRF systems utilize inverter-driven compressors to modulate the flow of heated or cooled refrigerant to individual units for on-demand comfort control. Significant energy savings are obtained through the ability to operate only at the needed flow rate, and by utilizing heat absorption output from a cooled space to provide heating for another. Industry estimates for utility cost savings range from 30% to 55% over traditional systems. Large distribution fans are unnecessary in VRF systems, as are multiple chillers, boilers, piping, and pumps. Ductwork is minimized or eliminated altogether. VRF systems are extremely quiet, flexible, and provide superior load matching for increased comfort and dehumidification.
Ongoing improvements in the technology has led growing numbers of building owners to opt for VRF on new construction projects, and it is becoming an increasingly popular choice in retrofit applications where space is limited, or in buildings where architectural or aesthetic integrity must be preserved. Manufacturers of VRF systems have addressed lingering concerns about heating capabilities in extreme cold and are now producing equipment that can provide 100% heating capacity at temperatures as low as minus 13°F.
PJM Mechanical is expert in the design, installation, maintenance, and service of variable refrigerant flow systems. For more information on VRF, please call us at 609-921-1394.
PJM Mechanical Contractors, Inc. is a multi-faceted mechanical contractor providing construction and installation, service and maintenance, and design/build services in a comprehensive range of mechanical disciplines that include HVAC, plumbing, controls, refrigeration, custom metal fabrication, piping, fire protection, and backflow preventer testing. PJM primarily serves clients in pharmaceuticals, manufacturing, healthcare, institutional, and other various commercial and industrial sectors.