Hybrid VRF is a two-pipe VRF zoning system that uses water instead of refrigerant in indoor spaces. Hybrid VRF systems offer similar efficiency, tighter temperature control, and improved zoned comfort using active chilled and hot water reset. They perform like comparable traditional VRF systems, even at low ambient temperature conditions. Features include a Main Hybrid Branch Circuit (HBC) controller, simultaneous heating and cooling, and scalability.

Mitsubishi Electric Trane HVAC US 

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