Surely though if less heat is lost then where is it going to? It may take
longer but in the end it will get away, and all tat should happen is that
the boiler will not be needed to be on as much, but then some areas of the
house might be colder than others.
Brian

--

This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
"Fredxx" wrote in message
...
On 06/05/2021 12:55, jon wrote:

What is this nonsense, heat is dissipated by radiation, convection or
conduction so how come efficiency becomes a problem.

For conventional central heating radiators most heat-loss is through
convection. Air is a poor conductor.

It seems there is less overall air flow for a tall radiator than long for
a radiator with the same area and construction.

So hardly nonsense.