![]() The boiler must be on an external wall and the flue must be 300mm from an opening window or door or from the eaves of the roof. Horizontal flueĪ horizontal flue is the simplest and cheapest option as it goes straight out the back of the boiler. The position of the flue is important as the combustion gases must not re-enter a property via a close-by window or cause a nuisance by discharging into your neighbours walkway for example. The heat is needed for the home and the remaining combustion gases (made up of water vapour, carbon dioxide, particulates, heavy metals and acidic gases) need to be removed via the flue. Boiler efficiency and flow temperaturesīuilding regulations provide detailed guidance on where a flue can safely discharge its gases. ![]() Note, this guidance is no substitute for getting a Gas Safe registered engineer out to survey. ![]() If you are also moving your boiler then it is likely that more regulations will need to considered. Some of these regulations will have come in since your last boiler was fitted and you will have to comply with them, the most recent uplift was 15th June 2022. Which building regulations apply to my new boiler?īuilding regulations cover many aspects of a new boiler installation, including flue position, efficiency, boiler location, gas pipe size and condense pipe drainage. ![]()
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