The fastest-growing segment of the U.S. HVAC market, variable-refrigerant-flow (VRF) zoning is a flexible, cost-effective, and environmentally friendly HVAC option for commercial buildings with multiple floors and areas. VRF zoning provides precise comfort control by moving refrigerant through piping to zones in need of cooling or heating. Some VRF zoning systems cool and heat simultaneously, providing personalized comfort to each zone or space regardless of time of day, sun or shade, ...

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