What output should I aim for?

[Tobiasisno1]

Hi everybody. We're refitting the kitchen and I want to replace the old radiator with a nice shiny one, but what heat output should I be aiming for? The room is rectangular, approx 5m x 4m, with 1 outside wall, 2 internal and 1 previously external which now has the garage the other side of it. The external wall is likely to end up mostly glass with a new door(s) and window(s). The outside walls are cavity with no insulation in. Can anybody advise please?

Thanks in advance
Keith

 

[muggles]

Need more info:

Exact rather than approx room length and width
Wall height
Room above or roof space? If roof space how much insulation?
Dimensions of windows, double or single glazed, wood, plastic or metal frames?
Dimensions of external door(s) with same info as windows
Brick or block walls?

 

[Tobiasisno1]

That was quick! Thanks, Muggles.

The length and width are within a few mm (ie less tha10) of 4m & 5m-is that accurate enough or shall I measure again?

Height is 2.4m

Walls are brick and very hard! (1950s house)

Can't give dimensions of windows/door(s) as we haven't decided on the design yet-depends on how much brickwork we knock out. They will be new DG upvc units tho'. Current door/window area(inc frames) is approx 4.3 sq m, but new design could go to 6.95 sq m. Is that accurate enough? If not I'll have to get back to you when we've had the doors fitted.

Keith

 

[Tobiasisno1]

Sorry, forgot to say there's a bedroom above.

 

[muggles]

You need 2.0kw of heating

 

[Tobiasisno1]

Thanks Muggles, that's great. Just need to find a rad now!

Keith