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Lord Foster of Bath to ask Her Majesty's Government, further to the Written Answer by Lord Callanan on 23 July (HL6670), what estimate they have made of how much less carbon dioxide would be emitted if boilers in all large houses were fitted with stored passive flue gas heat recovery technology (1) when such houses are built, or (2) when boilers in such houses are replaced. HL7278
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Lord Foster of Bath