Modelling the carbon-saving performance of domestic ground-source heat pumps

David Jenkins, R. Tucker, R. Rawlings

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)


A ground-source heat pump (GSHP) model is formulated and used to estimate the potential of a domestic GSHP as a carbon-saving technology (compared to a conventional gas boiler) with actual thermal data for a dwelling in the UK. The model shows good agreement with current sizing guidelines but shows possible barriers to the carbon-savings (and running cost savings) of GSHPs. This includes an analysis of output temperatures, system sizes and grid CO2 intensity. The model suggests that GSHPs should be aimed towards a new-build market (rather than retrofit) due to the likely reliance on high surface area/low temperature distribution systems. Also, grid CO2 intensity needs to be better understood when estimating the electrical consumption CO2 emissions of GSHPs, both for current and future scenarios. © 2008 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)587-595
Number of pages9
JournalEnergy and Buildings
Issue number6
Publication statusPublished - Jun 2009


  • Carbon
  • Domestic
  • Ground-source heat pump
  • Model


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