what size radiator

[jamesen]

Hi what size radiator would I need for my living room. It measures width 4.2 meters, length 4.7 meters and height 2.8. Online calculators vary from 7000btus to over 10000 btu. Thanks for any help.

 

[chimpboy]

I've found online rad calcs will vary, to get a more accurate size you would have to do a proper calculation. This means taking into account amongs other things u values of window size/type, wall type, how many external walls, what's above and below, have you got wall insulation ect..... 10000 btu seems on the high side, but as i said depends on a number of factors.

 

[jamesen]

What size radiator would you roughly recommend the room has on external wall and a 1.5 meters squared double glazed window.