Variable Refrigerant Flow (VRF) is everywhere these days. If you work in HVAC, you can’t escape it. The brochures promise efficiency, flexibility, and comfort – sometimes they sound like VRF can solve ...
LENEXA, Kan. — Popular in Asia for three decades, variable refrigerant flow (VRF) technology has been gaining ground in the U.S. for about the last five years, driven in part by the growing need for ...
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