Can someone please help with some advice. I have recently moved into
much larger house and have found that the central heating does not war all the radiators very well. I have tried balancing but althoug improved the rads are nowhere near the heat at my last house. The pum used is a Grundfos 15/60, my question is the house has 23 radiators approx 18 are large doubles, should i be looking for a replacement pum and if so how can i calculate the size i need, from waht i understan the pump i have is quite a powerful domestice version but i cany hel feeling its not pwerful enough as its the same as in my last hous which was quite smaller.
any help anyone can give greatly appreciated.
Regard
-- MattH