A collection of articles on heating systems . 1) Electricity hots up the price of heat. Argues that when insulation standards in commercial buildings are beyond those specified in the building regulations , the heating energy consumption required to maintain comfortable surroundings, will be reduced. When this occurs, the author maintains, electrical resistence heating can be a cheaper alternative than wet radiator systems. 27-29(3). 2) Predicting performance. Describes research undertaken at University College Cardiff, where a model has been developed to determine the performance of a heating system run at low temperatures. 30(1). 3) What`s afoot in floor heating?. Describes the advances being made at Plymouth Polytechnic in the development of low-cost high efficiency heating. 31-32(2). 4) Radiators continue to dominate. Examines the use of radiator heating systems for domestic dwellings. 33(1). Floor market hots up. A new market is emerging in the development of under floor heating