Thread was from 2010 so a while ago.
anything above 24kw is not necessary especially when you take into account cost of boiler and it’s minimum output values.
If you just are interested in hot water and hot radiators and need a higher flow rate, then higher Kw is good, if you want to achieve good boiler efficiency then the challenge is to achieve a balanced system that will last longer (boiler and system) and be more cost effective to run.
In a completely sane world, madness is the only freedom (J.G.Ballard).
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