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I'm having a new oil boiler and cylinder installed, upgrading from a vented system to unvented. The plumbers wanted to put in a 22mm internal pipe for the mains water, replacing the existing 15mm one, and have done this by repurposing the old boiler vent pipe, to save putting in a new pipe through ceilings and walls. As a result, all the water in the house now passes through a section of this old vent pipe (which previously led from the boiler up to the tank in the loft).
Is this sanitary? I suppose it's mainly steam that went up through the vent pipe, but might it also have been exposed to the muck in the central heating water? Should I be worried about drinking the water that has passed through this pipe?
Is this sanitary? I suppose it's mainly steam that went up through the vent pipe, but might it also have been exposed to the muck in the central heating water? Should I be worried about drinking the water that has passed through this pipe?