Variable refrigerant flow (VRF) technology was introduced in Japan in the 1980s, but was launched much later in the American market. Since it is still a relatively new technology here, many ...
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 ...
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