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 ...

This story is about good intentions gone bad during a VRF installation for a new 73,890 square for LEED Platinum middle school that opened in the fall of 2017. The construction cost was $30 million, ...