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TM65.1 Embodied carbon in building services: Residential heating (2021)
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TM65.1 Embodied carbon in building services: Residential heating (2021)

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Embodied carbon in building services: Residential heating (TM65.1) investigates the embodied carbon impact of heating and hot water equipment and strategies for use in residential buildings. In this document, embodied carbon refers to the greenhouse gas emissions associated with materials and construction processes (modules A1 to A5 (product and construction), B1 to B5 (in use) and C1 to C4 (end of life) defined in BS EN 15978:2011.

The embodied carbon calculations in this document follow the methodology outlined in CIBSE TM65, Embodied carbon in building services: a calculation methodology, as environmental product declarations (EPDs) are not yet widely available. The purpose of this document is to help engineers understand the embodied carbon impact of heating and hot water equipment, both at the product level and at the system level, to enable them to make informed design decisions early on in the design process.

To hear more about using the embodied carbon methodology in residential heating from the authors, see the TM65.1 launch webinar here:

#GrowYourKnowledge: Embodied carbon in building services: Residential heating (TM65.1)

The CIBSE embodied carbon methodology now includes several publications, digital tools, and free-to-all data-gathering forms. All of these can be accessed from www.cibse.org/tm65.

Table of Contents

Executive summary

  1. Embodied carbon in heating design
  2. Residential heating scenarios
  3. Key findings: product level
  4. Key findings: system level
  5. Conclusions

Appendix A: Methodology

Appendix B: Product results

Appendix C: Systems results

Appendix D: Complementary studies

Appendix E: Definitions

Authors: Louise Hamot, Clara Bagenal George, Yara Machnouk and Hugh Dugdale (Elementa Consulting)

Contributors: Dr Joe Jack Williams (Feilden Clegg Bradley Studios); Dr Julie Godefroy (Julie Godefroy Sustainability); Dr Francesco Pomponi (Resource Efficient Built Environment Lab (REBEL), Edinburgh Napier University); Simon Ebbatson (Elementa Consulting Ltd.); Simon Wyatt (Cundall)

Peer Reviewers: Roger Hitchin; Dr Yair Schwartz (University College London Institute for Design and Engineering); Tom Bunn (Arup)