What Heatloss Calculator?

[magicno1]

What Heatloss calc do all you people use?
just started using Mr Combi app and have compared it with various others with varying results.
I do have Stelrad Stars available but find it a little long winded.
perhaps you'll share what you recommend?
cheers

 

[townfanjon]

IMO ... Mr combi massively oversized them. Tried to get into stars but takes too long and is too complicated .
I have gone back to working them out longhand and just have a template set on word and just adjust sizes occasional u value . It doesn't take long at all once you get into the hang of it