Variable refrigerant flow (VRF) systems were first introduced to the HVAC community in Japan in 1980 as a highly efficient heating and cooling option in multi-zone comfort applications. It took the ...
This month’s Facility File is based on a new 40,000-square-foot office building HVAC system using VRF heat pump equipment with a focus on the Back2Basics February test. The project will include two ...
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