In article ,
Colin Wilson writes:
Yes, they will give out a lot less heat. The only problem with CFs
(compact fluorescents; what these are) is the colour temperature.

The colour temperature of pretty well all those you can buy is 2700K,
same as a filament lamp (and intentionally so).

Not only that, some can take a while before they start to emit their
stated "equivalent" output...

Which can be really handy in a bedside light.

--
Andrew Gabriel