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Plastic Central Heating Leak Underfloor and Changing for Smaller Size Pipe

Postby Dieseldic » Wed Jan 15, 2020 11:10 pm

Hi, under our kitchen floor there’s a 22mm polypipe central heating flow and return which has a leak somewhere. Someone told me you can have a smaller pipe installed inside instead the old pipe instead of digging the floor up. Is this possible? Would the central heating still function with a smaller pipe up the middle?
Any help would be much appreciated
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