rating this radiator

About 2300 BTU if it's a single panel.

|I have a rad in bathroom, 700mm wide, 600 high, 50mm deep. It has 26 |water channels running vertically approx 15mm wide and 10mm deep, |spaced at 10mm, It has 40mm fins on the back, and the whole thing is in |a kind of open metal box with slots on the top. |Any idea what BTU this would be ? |I'm looking at replacements like towel radiators etc, but dont want |less heating capacity than I have.

Go to the Stelrad web site

Yep, single panel with fins. Cheers, Simon.

As others have said, find a similarly sized single finned radiator in a maker's catalogue, and note the heating capacity.

But be aware that a towel radiator of the same physical size will provide but a fraction of this rad's heating output - about 1/3 if you're lucky - so you'll need a *massive* towel rad to get the current output level.

When comparing radiator specs in catalogues, make sure that they all use the same delta-T - 'cos they might not - and adjust the figures as necessary.

On 5 Jan 2007 01:13:40 -0800 someone who may be "sm_jamieson" wrote this:-

Why?

Why not simply add a towel rail to dry towels and leave the radiator to warm the room? The towel rail may add a little heat, but not much unless it is a model with built in radiator.