This project studied variable refrigerant flow (VRF) systems in Wisconsin and developed a program framework for Focus on Energy. The research team analyzed market barriers and typical energy and cost savings of VR systems. The project team interviewed stakeholders (VRF manufacturers, contractors, energy efficiency program staff), developed energy and economic models, and assessed five sites in the state with existing VRF systems.

Contributor: Slipstream, Center for Energy and Environment
Project Timeline: July 2020 – June 2021

Research Objectives:
This research included five key objectives:

1. Understand the operation and sales of the newest generation of VRF products through interviews with stakeholders in all areas of the supply chain.
2. Understand the energy usage of existing Wisconsin building stock through review of 2012 Commercial Building Energy Consumption Survey (CBECS) data.
3. Develop baseline and estimated energy use for Wisconsin buildings including economic analysis using energy modeling.
4. Complete site assessments to characterize the features and applications successfully deployed today.
5. Review incentive offerings across the country and merge with lessons learned from Wisconsin research to produce a framework for a VRF offering for Focus on Energy.