Is there a reason for a large differnece in output BTU's for radiators of the same style and size? Small differences I get but on a 500mmX1400mm double panel convector radiator the outputs are 6900 btu for a Prorad or 9261 btu for one of the same size and style as supplied by Compass.
Any reason for this? makes it a little confusing when trying to size one for a room.
Any reason for this? makes it a little confusing when trying to size one for a room.