One boiler versus two


Postby stindig » Thu Jan 24, 2008 3:29 pm

Hi

Which is better: a single large boiler or two smaller one equally the same capacity?

I am considering a 49Kw Viessmann 300 but my plumber would rather fit 2 Vaillant units at half the capacity. Granted this would improve resilience but how is it on flow rate etc?

Thoughts or recommendations?

thanks

stindig
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Postby htg engineer » Thu Jan 24, 2008 7:18 pm

How many radiators do you need to heat ?
how many bathrooms ?
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Postby stindig » Thu Jan 24, 2008 11:05 pm

I have 5 bathrooms and 6 bedrooms. Three of the bathrooms have showers. One of these is about to be refurbished with a large headed shower. I have 4 boys who do a lot of sport so the bathrooms are used a fair bit.

26 radiators in total.

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