Mitsubishi was broadly welcomed the Energy Saving Trust’s (EST) domestic heat pump report, despite mixed industry reaction
John Kellett, General Manager of the Domestic Heating Systems Division, said: “The EST results are not surprising although some have chosen to interpret them as disappointing.”
The trial, which studied heat pumps at 83 sites – 54 ground source and 29 air source – began in early 2009 and monitored the technical performance and customers’ experience over a 12 month period.
“If you look at the actual detail of the results they clearly demonstrate that the technology can and does work in UK homes. The introduction of this report is timely in the evolution of this technology, as it is the first independent publication which identifies the key requirements in ensuring the correct application and use of heat pumps in the UK,” says Mr Kellett
“The main point of the report for me is that it reiterates what we as a manufacturer have been saying since we first entered the market three years ago – you have to ensure that the property has the appropriate levels of thermal insulation before you start. You then need to correctly size the system and the heat emitters, and you also need to educate the homeowner into how to get the best from their system.
“We have always insisted that our installers attend product specific training which covers all the points raised by the trial. We therefore welcome the EST’s call for a training and standards roadmap and would also support the establishment of minimum compulsory standards.”
The report concluded that many of the installations failed to be correctly designed and/or installed, recommending that the responsibility for fitting should sit with one company, who should be contractually obliged to ensure a consistent after-sales service
“At Mitsubishi Electric we are confident that heat pumps are the most credible mass-market alternative to fossil fuel heating but we also recognise that this poses a threat to other industries who will try to use the report to shake confidence in the technology.
“We should therefore consider this report as a timely wake-up call and a sound basis for developing future best practice.”