Send us a text

Nathan talks with Katrina from Energy Systems Catapult and Trysten Lee from Open Energy Monitor about a key question surrounding the Electrification of Heat (EoH) trial: why did the heat pumps perform so poorly? The trial, involving aprox. 740 heat pumps, showed an average Seasonal Performance Factor (SPF) of just 2.81 for air source.

This contrasts sharply with the performance of heat pumps monitored by Trysten at HeatPumpMonitor.org (HPM). Interestingly, many of the installers whose systems are tracked on HPM are relatively new to the field, some with only a few years of heat pump experience. Yet, they consistently achieve high-performing heat pump installations, a stark difference from the results of the large-scale trials. This success likely stems from their adherence to the two BetaTeach principles, their approach to self-directed learning, and their use of peer-to-peer learning. They also tend to pursue different training paths, rather than relying solely on the standard 3-day BPEC and LCL Award courses.

The trial, conducted in partnership with Warmworks, OVO, and E-ON, involved 19 MCS contractors installing approximately 750 free heat pump systems.  Beyond heat pump performance, the trial has provided valuable insights that are informing policy development in areas such as planning permission and Distribution Network Operator (DNO) applications. 

Trystan and his team have managed to visualise the data captured from the trial at eoh.heatpumpmonitor.org


For information on the Air to Air trial and to see if you can have a free A2A heat pump system click here

This season is sponsored by PrimaryPro

Primary Pro, a pipe insulation system developed by Dave Smith, is gaining popularity among engineers for use in heat pump installations.

Support the show

Learn more about heat pump heating by following
Nathan on Linkedin, Twitter and BlueSky