In article ,
"Codswallop" writes:
"Dave Fawthrop" wrote;
But to balance domestic central heating radiators you must measure the
temperature of the air in the room. The surface temp of the radiator is
irrelevant.

You mean that this FAQ is wrong?
http://www.diyfaq.org.uk/plumbing/rad-balance.html

FAQ is correct. I can't imagine what Dave is thinking about.

--
Andrew Gabriel