In the next few years the online sale of products from the area of sanitary and heating technology plus installation will grow by 30-40 per cent across Europe. At present they account for a share of between one and two per cent in Germany, the Netherlands, Belgium and Switzerland. As reported in a survey of the mechanical services sector by Roland Berger, a management consultancy, the share in Britain is in excess of three per cent. The authors forecast that, by about the year 2017, online sales in the European mechanical services market may well level out at six to seven per cent of total sales.