How easy and inexpensive will it be to convert my gas back boiler in the lounge to a condensing boiler in a new site in the kitchen. At the moment the gas only comes as far as the lounge fireplace and will then need to be extended across the lounge (wooden floor), the dining room and the kitchen floor (concrete). How do you think the gas pipe could be extended? Would it be possible to extend it outside the house. There is access along a path alongside the house but the path has a right of way for other people

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