The 2025 Oregon Energy Efficiency Specialty Code (OEESC) brings a major shift in how building enclosures are designed and evaluated. With the OEESC’s adoption of ASHRAE 90.1-2022’s thermal bridging requirements, design teams must now account for linear and point thermal bridging. This session unpacks what these changes mean for your projects. You’ll explore the practical impacts of the new energy code requirements, discover strategies for meeting compliance, and identify tools that can help you stay ahead in a rapidly changing energy code landscape. This session will help you gain a clear understanding of the steps needed to quantify linear and point thermal bridges and incorporate the results in your COMcheck compliance calculations. By examining the updated air leakage testing requirements codified in the 2025 OEESC, you’ll be able to determine whether whole-building air leakage is mandatory or if the air barrier design and verification approach will apply to your project.
What you’ll learn
- Identify the latest building enclosure changes in the 2025 Oregon Energy Efficiency Specialty Code.
- Explain heat flow mechanisms through building enclosures.
- Describe how to quantify linear and point thermal bridges and include them in overall COMcheck compliance calculations.
- Summarize new whole-building air leakage testing requirements.
