With all its piping, brazing, sophisticated controls, and new-age software, variable refrigerant flow (VRF) may seem like a daunting technology to some contractors. And while it does take some time to ...
HVACR manufacturers, distributors, and contractors alike have taken notice of the variable-refrigerant flow (VRF) equipment and applications that are entering the U.S. market. Overseas, in countries ...
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