Help radiator size

WENDYr · 28 Feb 2019

So I’ve used a website to work out what heat output we need from radiators in a room we are renovating. We need 3120 watts in total. If I get 2 big double panel radiators (1.2m long)the combined heat out put is 4664 watts. The next size radiator down (1m long) would give a heat output of 3886.

Which size is best. Can you have too much heat output?

kidgreen61 · 28 Feb 2019

I prefer to go bigger, it will warm the room quicker, if you fit thermostatic rad valves, you won't be wasting energy when the room gets up to temp.

dilalio · 1 Mar 2019

Better to be looking at it than looking for it

mogget · 1 Mar 2019

If it's the room with the room stat in it, I'd go for the smaller of the two sizes, or the room stat will be satisfied too quickly and other rooms might get cold.

If it's in any other room I'd fit the larger size with a TRV, as stated above.

WENDYr · 1 Mar 2019

Thanks everyone it’s not a room with a stat in. It’s a living room/dining room that we are knocking through. I was just concerned with the larger ones that the boiler would struggle?

muggles · 1 Mar 2019

If it's too big, you can turn it down. If it's too small, you'll be cold

dilalio · 1 Mar 2019

muggles said:
If it's too big, you can turn it down. If it's too small, you'll be cold

Are we still talking radiators?

dilalio · 1 Mar 2019

dilalio said:
Are we still talking radiators?

dilalio said:
Better to be looking at it than looking for it

Likewise

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Help radiator size

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