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  1. Z

    which gas combi boiler. Vaillant 838 or 938 boiler and why? efficiency?

    When I asked the Worcester guys they said worcester was the best. won the 'Which' award. The same with the Vaillant guy who said Vaillant was the best. Again won the 'Which' award. they both can NOT be the current winner... although the Vaillant guy did say he fits Worcester and other brands...
  2. Z

    which gas combi boiler. Vaillant 838 or 938 boiler and why? efficiency?

    wow, not heard of viessman, they seem like a premium company. 98% efficiency is that true? worcester are stating 89.9% vaillant 92.5% so 98% is a big jump?
  3. Z

    which gas combi boiler. Vaillant 838 or 938 boiler and why? efficiency?

    not 100% sure why i opted for the above two options. i had mixed opinions and every time i called someone out they all gave different views. 1) the british gas guy said 832 will do the job. but he never looked at the house, the radiators, loft insulation. he asked me and i answered : 15 rads...
  4. Z

    which gas combi boiler. Vaillant 838 or 938 boiler and why? efficiency?

    ok which boiler Vaillant 838 or Vaillant 938, is best or most suited for the following property with following needs 15 double sized radiators. maybe add 1 more in the future. 6 bedroom upstairs one main bathroom one ensuite 2 large living rooms down stairs. 2 kitchens one wc. (maybe add a...
  5. Z

    large 6 bed house with 2 bathrooms 2 kitchens a wc. what boiler do i need?

    I have the si II model (it's not high efficiency only 80% efficient, rated D). The Cdi model (this is high efficiency, about ~ 90.5% efficient, rated A ) gives more hot water output for the same power. 28 si II = 28kw = 10.3 L/min 28cdi = 28kw = 11.4 L/min 32cdi = 32kw = 13.1 L/min...
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    large 6 bed house with 2 bathrooms 2 kitchens a wc. what boiler do i need?

    Yes, good reply. Probably the most thought provoking reply so far. Well done! Iv got taps ( water restrictors) in every tap of the house. Both on the cold taps and hot taps, on the bidets and on the showers and pipes going up and for the pipes on the ground flow. This helps to isolate any tap...
  7. Z

    large 6 bed house with 2 bathrooms 2 kitchens a wc. what boiler do i need?

    Well if it sounds too good to true it prob is. I'll wait and see how much I actually have to pay. Nothing is free. There has to be catch. I'll wait and see. But I'm not expecting (at least ) everything to be free. It can't be.
  8. Z

    large 6 bed house with 2 bathrooms 2 kitchens a wc. what boiler do i need?

    Muslim shower = Is a bidet. Ie hand held water spray. A spray that is used to clean (mainly) the backside after excretion as well as the toilet itself. The jet wash action cleans faster and it feels more cleaner afterwards. Like a power washer (although not as powerful) to wash parts of your...
  9. Z

    large 6 bed house with 2 bathrooms 2 kitchens a wc. what boiler do i need?

    Maybe I could. Good idea, my brother had two in his building and i saw it work well. For commercial situation it is a clever idea. But in this ( domestic ) case it's too expensive (I think). 1) I'll have to pay for the second boiler my self, don't want to do that... Plus it might mean two lots...
  10. Z

    large 6 bed house with 2 bathrooms 2 kitchens a wc. what boiler do i need?

    currently we also have electric showers installed in both the bathrooms. i.e 1 9.5kw electric shower right next to hot water supply. they are as a back up to the combi boiler, and the combi boiler is a back up to both the electric showers. the system has worked well in case of failure to...
  11. Z

    large 6 bed house with 2 bathrooms 2 kitchens a wc. what boiler do i need?

    I have a large 6 bed house with 2 bathrooms 2 kitchens and 1 down stairs toilet. + 2 large living rooms. 15 / 16 good sized radiators and currently have worcester 28 Si II boiler. At 80% efficiency it is D rated. We use gas not LPG. But need to change it so a good time to upgrade to one with...
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