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Some years ago an in line device called Combismart was marketed to save water and gas on hot water draw off from combi boilers. I purchased one as we have some long runs of pipe between boiler and taps. It did work, restricting the water flow until the boiler heated the water enough (pre heat...

Thanks very much for the confirmation :)

This is probably really simple but I would like it confirmed please before I go giving my neighbours reasons to complain. I'm mid decoration in multiple locations so PIR's and door switches are in disarray but I would like to make it appear I have a working system to the outside world. I have...