DIY Doctor UK DIY Forums

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

How many radiators do you need to heat ?
how many bathrooms ?

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.

stindig