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To ask Her Majesty's Government what assessment they have made of the level of Seasonal Coefficient of Performance which is achieved by air and ground source heat pumps in real-life installations compared to those stated in the Microgeneration Certification Scheme Product Directory; and what plans they have (1) to introduce a requirement that real-life performance and efficiency must be stated by manufacturers in advertising and technical literature, and (2) to ensure that purchasers and installers are able to make a realistic assessment of the likely running costs.
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