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Hi Andrew . Not sure quite what you mean but there's a hot water tank in the downstairs airing cupboard and a red expansion vessel connected to the boiler if that helps? Everything runs off the gas boiler but I believe the water temperature in the tank has its own temperature control on the...

Hi All , I'm new to this , so apologies if already been covered . Have a Potterton Suprima 70L boiler which has always run at max temp using single black dial inside control panel as originally advised by fitter . Due to the cost of living / fuel crisis can I save money by turning down...