Thirty-Seventh Report - Decarbonising home heating

While some organisations advocated a ‘fabric first’ approach, which involves improving the thermal performance of materials in a building prior to installing a heat pump, others suggested that it is not necessary, making it difficult for households to determine cost- … Read more While some organisations advocated a ‘fabric first’ approach, which involves improving the thermal performance of materials in a building prior to installing a heat pump, others suggested that it is not necessary, making it difficult for households to determine cost- effective measures. In their written evidence to us, the Energy & Utilities Alliance and National Energy Action both suggested, for example, that a fabric first approach would reduce bills and cut energy consumption, while the Kensa Group highlighted that loft and cavity wall insulation reduced heat-related energy consumption by only around 10%.27 DESNZ told us that it planned to assess the effect of changes it has made to insulation requirements on people’s experience through its planned evaluation of the Boiler Upgrade Scheme.28 23 DHH0053, Written evidence submitted by Centrica, 29 April 2024 24 Qq 3–4, 6–7 25 DHH0050 26 Qq 4–7, 13 27 DHH0040, Written evidence submitted by Energy & Utilities Alliance, 29 April 2024; DHH0020, Written evidence submitted by National Energy Action, 29 April 2024; DHH0016, Written evidence submitted by The Kensa Group, 29 April 2024 28 Qq 39–42 Decarbonising home heating 13 Show less

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In response to our question about how DESNZ ensured customers had access to proper information to make decisions about investment and running costs, the Department explained that it provided information through its online tools on heat pump suitability and retrofit … Read more In response to our question about how DESNZ ensured customers had access to proper information to make decisions about investment and running costs, the Department explained that it provided information through its online tools on heat pump suitability and retrofit options to make homes cheaper to heat, and a phone line service providing households in England with advice about how to improve the energy performance of their homes. Research published by Energy Saving Trust in December 2023, and the written evidence it submitted to us, however, highlighted a lack of impartial, personalised support as a major barrier to decarbonising homes, with almost half (48%) of homeowners in England unsure where to get independent, impartial advice on making improvements to reduce their homes’ emissions. It told us that the current process for households looking to decarbonise their homes was “complex and confusing”, which left people unsure where to find trusted information about what measures are suitable for their property. It also cautioned that financial support alone will be insufficient to increase uptake of low-carbon heating if not accompanied by impartial, tailored advice services that guide consumers through the process.30 Show less

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We heard from DESNZ that a key challenge will be to retrain around 110,000 existing gas heating engineers to install heat pumps. Centrica, an energy company and low carbon heating installer, agreed that it was “vital” to focus on retraining … Read more We heard from DESNZ that a key challenge will be to retrain around 110,000 existing gas heating engineers to install heat pumps. Centrica, an energy company and low carbon heating installer, agreed that it was “vital” to focus on retraining as many engineers as possible to ensure that there are enough engineers to support homes to install low carbon technologies. DESNZ considered that this could be done quickly through an existing skilled workforce.35 The Heat Pump Association and Heat Pump Federation, which represent manufacturers of heat pumps, however, called for more to be done to incentivise the upskilling of the existing heating engineer workforce.36 In its written evidence to us, Schneider Electric said that there were “inadequate” incentives for upskilling and training. It explained that the complexity of heat pump installations compared to traditional boilers and the current insufficient £500 training grant to cover lost income from four days of training discouraged installers from upskilling.37 Monitoring and evaluating progress Show less

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DESNZ does not have a single measure of the number of heat pump installations. Instead, it relies on data from a range of sources, including the number of heat pump 32 Q 21; DHH0008; DHH0010, Written evidence submitted by The Retrofit Academy, 29 April 2024; DHH0027, Written evidence submitted by …

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DESNZ told us that it was looking to produce a more regular data series that it could publish by combining some of its data sources. It was also developing a dashboard that will show the number of heat pumps installed through each government scheme. The NAO found that regular monitoring …

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