OK: do any of you clever people on here know a relatively simple method of working out how large a radiator is needed in a particular room?
I know it has to do with a lot of different factors, but is there a simplified method?
thanks for any advice,
Alcazar

I'm sure everyone will come up with a different way, but here's one from featureradiators.co.uk...


Find the volume of the room in cubic metres (length x width x height)

Lounges and dining rooms multiply by 50.
Bedrooms multiply by 40.
Common areas and kitchens multiply by 30.
Bathrooms multiply by 90.

For rooms facing north add 15%.
For French windows add 20%.
For double glazing deduct 10%.
For very exposed sites, or very cold weather add 10%

This will give you the output of any radiator in Watts. Multiply this by 3.412 to give the requirement in BTU's.

And another link...
http://www.tertullian.org/rpearse/heating/radiators.htm

Complicated, but my maths will out!
Thanx guys:D:
Alcazar

Try http://www.bisque.co.uk

They have a system called Heatcalc included with their sales material that's really easy to use. The results have seemed good for us so far when we've replaced rads.

And thanx again.
Alcazar