Serge Auckland wrote:

"Eeyore" wrote
Serge Auckland wrote:

Quite apart from the problems of disposing of old CFLs, I question the
whole principle of Low Energy lighting. If you have a conventional bulb,
much
of the energy output is in the form of heat, which will help heat the room,

and consequently will reduce the need for other heating, central or
otherwise.

That's sort of fine if you want extra heat. Often as not you don't.

If the central heating is on, then you are, by definition, needing extra
heat. The heat output from lighting will mean that the room thermostat (or
radiator valves) will turn off that bit sooner.

Not really.

The heat from most lamps hangs around at ceiling level. It does sod all to warm
a room.

I suggest you compare sitting in front of a 1kw bar electric fire to switching
on ten 100w light bulbs to see how true that is.

Graham