Mr. Alan W. WilliamsTo ask the President of the Board of Trade how many condensing gas boilers were fitted in houses in the UK(a) in 1980, (b) in 1990 and (c) at the latest available date. [28974]
§ Mr. BattleThere are no official figures on the installation of domestic gas condensing boilers. However estimates by the Energy Saving Trust show that no such boiler were installed in 1980, between 3,000 and 5,000 were installed in 1990, and approximately 35,000 were installed in 1997.