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Hi, Had a Vaillant 831 installed at the weekend and it seems to be giving off a strange odour when its running. At first I thought it might be the new copper pipes/flux but I'm becoming more convinced its something else. Can't decide if its gas, it doesn't smell exactly like the gas from...

Hi, My old SIME friendly E boiler has breathed its last and I'm on the verge of getting a new boiler installed. My house is a 3 storey victorian terrace with 4 bedrooms, 8 radiators, and 1 bathroom with mixer shower (2nd shower room is electric) The installer has proposed the 831 is...