Need extra heat!!

[Mark Tomas]

hi all, recently had new system fitted...heatslave oil external fitted plus rads,
1 of the bedrooms is not warm enough calcs come in at 5300 btu there's a 600x1000 p+ stelrad in it rating 4597 btu....the next 1 up is the k2 which states 5910 btu is it just a case of replacing the p+ with the k2 to get the extra heat in ??

 

[Iamchamps]

Or addressing the heat loss of that room. What are the windows and stuff like?

 

[JohnD]

is the existing rad fully hot all over?

the calculators are over-optimistic and you will usually be more comfortable with a bigger (preferably longer) rad.

 

[Mark Tomas]

The room as 3 external walls 2 new double glazed units wooden floors bungalow....yes really hot the rad is.

 

[JohnD]

bare wooden floor?

is it too late to get access to put insulation between the joists? As well as insulation, this muffles draughts. You can also block draughts by injecting pink fire foam under the skirtings, where there is a gap.

 

[Mark Tomas]

Yes a bit late now unfortunately underlay down gaps filled in,
under skirting and new carpet was fitted last week...

 

[Mark Tomas]

If I change for a k2 then I can sort it myself....or it's a change to 1400x600
And will need get the heating chap in...what do you recommend guys...

 

[Daveydub]

To confirm that the K2 will do the job, buy a 350 watt electric heater for about £12 and put that in the room. If that & radiator now get the room toasty then the K2 will do it. If not it's get the man in time. Save you spending on the rad & then spending on another rad.

 

[oldbuffer]

And don't forget a K2 will have pipe centres a different distance from the wall so there will be some, probably minor, adjustments needed.

 

[ianmcd]

you might want to check the pipe diameter and length of run before you start changing radiator sizes