Variable refrigerant flow (VRF) systems are widely used in commercial, educational and institutional settings for their energy efficiency, zoning flexibility and design adaptability. They are a strong option for both new construction and retrofit projects, including those requiring long vertical piping runs.

While VRF can be applied across many industries, this guide focuses on three primary application areas: commercial spaces and classrooms, dormitories and multi-family housing, and institutional spaces where codes more strictly limit refrigerant use in occupied spaces. Within these categories, we outline key considerations for selecting and designing traditional VRF and Hybrid VRF (HVRF) systems, explain their differences and highlight best practices for enhancing performance and compliance.

Sponsor: Trane