Radiator Output

[Roger]

Hi.

I have an old single panel non convector rad in my dining room which is

150cm wide and 64cm tall. Anyone know what the BTU output of this rad would be, so I can spec a new one.

TIA

Roger

[Mike]

3700 +/- quite a bit.

[Lobster]

Older radiators are less efficient than their modern equivalents, so there's no formula which directly converts rad size to output (model/brand will affect it too). Suggest you'd be better off starting from first principles and calculating how many BTUs you need for the room (plenty of calculators available online).

If you fitted a new one of the same dimensions, it would certainly be more efficient than the one you've got, so at least the room wouldn't be cold...

David

[Lurch]

On Mon, 7 Feb 2005 18:52:28 -0000, "Roger" strung together this:

Ignore the size of the old one and calculate the rad size required from the size of the room. There's nothing to say the old one isn't incorrectly rated.

[Roger]

Thanks. The room is semi open plan joining the lounge. Do I just size the room as if it was self contained and take into account windows, etc?

TIA

Roger

[Lurch]

On Mon, 7 Feb 2005 22:42:20 -0000, "Roger" strung together this:

Assuming the adjoining room has been calculated in the same way yes. If the room through the other half has a woefully underspecced rad then it might be worth changing that one too.

[Roger]

The lounge was "re-radded" by the plumber a couple of years ago, so that is up to date.

Thanks for your help

Roger