Need to compare output of old radiator with new radiator.

[jem16]

Currently I have in my kitchen an old double radiator (no fins) - size is approx 590mm by 800mm.

My mum is redoing her bathroom and is replacing her radiator with a heated towel radiator so has a reasonably new radiator I could use. It's a single panel, single fin of approximately 600mm by 700mm.

Can anyone tell me if I lose/gain much heat by replacing my old double radiator with no fins with a new single radiator with single fins?

 

[TicklyT]

I would guess the output will be about 20% to 25% less. The new rad. is about 10% smaller, and will probably have about 10% less output per unit area than a double rad.

 

[jem16]

Thank you.

I managed to find a pdf file which gave the heat ouput of old and new radiators.

http://www.bsmw.co.uk/pdfs/A Guide to Radiator Sizes and Heat Output.pdf

 

[D_Hailsham]

I managed to find a pdf file which gave the heat output of old and new radiators.

Very useful; I have been looking for something like this for ages.