Openstudio 2.9.1 Jun 2026

: It prevents over-cooling in summer when occupants can tolerate higher temperatures. LEED/WELL Compliance

Because LEED v4.1 uses ASHRAE Standard 90.1-2016 (Appendix G) for performance ratings, and EnergyPlus 9.3 is the DOE-approved engine for that standard, 2.9.1 is the legal-safe choice.

The typical workflow for a modeler using this version follows a structured path: openstudio 2.9.1

EnergyPlus 9.3 introduced improved ground heat exchanger (GHE) models. OpenStudio 2.9.1 exposes these correctly in the HVAC tab. You can model vertical bore fields connected to water-to-water heat pumps without the "mass flow imbalance" errors that plagued EnergyPlus 9.2.

One of the highlights of the OpenStudio 2.9.1 ecosystem was its tight integration with SketchUp. This allowed users to draw 3D building forms and immediately "tag" surfaces as walls, windows, or floors. For 2.9.1, users typically paired the software with SketchUp 2017 or 2019 to ensure the plugin operated without glitches. Moving Beyond 2.9.1 : It prevents over-cooling in summer when occupants

Have a workflow tip for 2.9.1? Join the conversation on Unmet Hours using the tag #LegacyOS.

Additionally, the community (for Grasshopper) maintains backward compatibility files that allow you to export IDFs compatible with 2.9.1's strict schema. OpenStudio 2

Are you or a specific error?