Main heating The main heating system is defined as:
{"Image DocumentName": "Main heating The main heating system is defined as:", "Image ImageDescription": "A system which heats the largest proportion of the dwelling. A system which is not usually based on individual room heaters (although it can be) A system which usually also provides the water heating. A typical main heating system would be a central heating boiler. If there is more than one heating system or device in a property use the following process to decide which is the main heating system. The main system usually provides both space and water heating and should heat at least 30% of the dwelling. If no system provides space and water heating then select the system which heats the greatest part of the dwelling. If there is still doubt then select the system which supplies useful heat to the dwelling at the lowest cost. If the costs are the same then select the system which heats the living room.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}