MEP Embodied Carbon

The Beginner’s Guide, V2

Welcome to the Beginner’s Guide to MEP Embodied Carbon v2, an updated, comprehensive resource developed through cross-industry collaboration between MEP 2040 and the Carbon Leadership Forum.  With takeaways from the MEP 2040 Whole Life Carbon Pilot study and a year of industry use, this updated guide provides the same lessons from the first version, as well as additional findings, including:

• Inclusion of MEP Whole Life Carbon Pilot results by category and life cycle stage (p. 4, 8–9) 

• Updates to project reporting fields (p. 7) 

• MEP 2040 reporting workflow (p. 10) 

• MEP category inclusion comparison across relevant standards (p. 15) 

• Addition of metric values for piping tables and corresponding Revit formulae (p. 18–23) 

• Updates to A4–C tables in alignment with ASHRAE/ICC 240P Draft 2 (p. 50–61) 

• Updates to uncertainty guidance with example calculations and a new uncertainty calculation template (p. 60–61)

• New FAQ Section Includes:

  • Use of the guide outside the United States (p. 64) 

  • Definition and application of site boundaries in reporting (p. 65) 

  • District energy systems (p. 66) 

  • Refurbishment and retrofit projects (p. 67)

Whether you’re integrating MEP systems into your carbon assessments or looking to understand and reduce your systems’ impact, this guide provides practical methodologies to move from measurement to meaningful action. We encourage you to download the guide, share it with your networks, and continue your valuable contributions to reducing MEP whole life carbon.