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  1. M

    viessman combi boilers

    I was going to have a Vaillant 831 fitted but the plumber who has just been around to quote suggested looking at the Viessman boilers 200 series. Anybody got any experience with these
  2. M

    Vaillant 837

    I have decided on a Vaillant boiler after talking to several owners. I have a three bed one bath house and have been recommended a 831, is there any benefits of having an 837 fitted ?
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