CHeSS was produced by the building research establishment BRECSU, in response to a request from the Heating Strategy Group of the Energy Efficiency Partnership for Homes, which recognised that one of the Key difficulties facing the domestic heating installation industry was a lack of common standards and understanding of what should be done to improve energy efficiency.For almost 20 years, BRECSU has been promoting energy efficiency in buildings on behalf of the government. Since 1989, they have done this as managers of the buildings element of the Energy Efficiency Best Practice programme, on behalf of the UK's Department of the Environment, Transport and the Regions (DETR) and the devolved administrations.CHeSS gives current recommendations for good practice, and best practice, for the energy efficiency of domestic wet central heating systems. Purchasers - consumers should use these specifications to ensure their heating installations will conform to current good or best practice. Installation engineers should use them to quote for systems of defined quality, this will enable the consumer to make informed comparisons between competing tenders to ensure their heating installations will conform to current good or best practice. It explains to purchasers and suppliers how the efficiency-critical components should be specified, Russell Surveying Services follow those specifications in their design criteria and offer advice and full system design and specification to meet your requirements.Russell Surveying Services Specification and Design service Consultant will visit your home and discuss your complete Plumbing or Central Heating project, design, materials, and highlight any unforeseen or potential problems.Once we are sure you are satisfied we will provide you with heating calculation schedule specification ready for tender by your chosen contractors. We can arrange to meet your chosen contractors on site to discuss your requirements and how best to undertake the contract. Then we check out their quotes for quality, technical merit, plausibility of completion dates and overall value for money. Receive personal help and advice in your home from an expert in the Plumbing and Heating trade, with years of knowledge and invaluable money saving tips and ideas offering advice on the best value suppliers of materials and tradesmen to undertake your work.