Private Heating Systems 49. Mr. Rose asked the Minister for Energy whether he will introduce a system of grants and subsidies to enable domestic, industrial and commercial consumers to change from oil to gas-fired central heating. Mr. Arthur Lewis asked the Minister for Energy whether, in view of the energy shortage, he will consider introducing a system of subsidies for firms and private individuals who convert their heating systems from oil-burning to coal or gas-fired systems. Mr. Patrick Jenkin No.