In article ,
"Dave Plowman (News)" writes:
In article
,
NT wrote:
Thanks everyone - an oil-filled rad with thermostat I think it is then!
:-)

Thats nearly the worst of all options. Not only are plugin electrics
the most expensive to run, but the low power output and lack of fan
mean it'll need to be switched on a while before the room's used,
wasting even more money.

The room is warmed by the central heating morning and evening when the
rest of the house is in use. All that's needed is to maintain that
temperature during the day. And all electric heaters are 100% efficient.
Apart from a fan heater where the fan uses extra energy. ;-)

and where do you think that extra energy ends up?

and you can only claim the 100% efficiency if you start measuring after
the 60% loss in the power stations and whatever it is in the supply
network. (I learned a few days ago that our overhead HV conductors run
at around 90-100C.)

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]