Mr. R. Duckworthasked the Minister of Fuel and Power what is the nature of the test which it is proposed to apply to domestic coal-burning appliances; and by what date it is anticipated that only 1244W reasonably efficient appliances will receive the appropriate hall mark of the British Standard Specification.
Major Lloyd GeorgeDomestic coal-burning appliances are of many types and the tests to be applied to them naturally vary with appliances. For details of the tests laid down by the British Standards Institution, I would refer my hon. Friend to the appropriate Standard Specifications referred to in my reply to him on 13th February. These specifications relate to a particular standard of performance and inefficient appliances will necessarily fall below that standard. Moreover, the standards laid down will, no doubt, be raised from time to time.