Market Characterization Study of Automated Demand Response Capabilities of VRF Technologies

Variable refrigerant flow (VRF) systems are well suited for automated demand response (ADR) because of their high efficiency, inherently flexible design, and more sophisticated controls available from the factory, relative to traditional air conditioners. Although VRF has been used successfully for energy efficiency programs, its applicability to ADR is still unclear. The objectives of this study are to understand the status of ADR-capable controls across VRF manufacturers, report on VRF controls compliance with the demand response (DR) requirements in both California’s existing building energy code (2013 Title 24), as well as DR requirements in ASHRAE.