In article , John Rumm wrote:
wrote:

This whole subject is filled with myth and bad advice. Today for
domestic installs, the only sensible thing to do is turn off when not
wanted, however long or short that may be.

Unless you have one of those pesky CFLs that take 10 mins to achieve a
worthwhile light output! ;-)

I see few taking that long, and they tend to be outdoor types in colder
conditions.

If you want ones that warm up faster, I have found in general that ones
without outer bulbs start brighter and warm up faster than ones with outer
bulbs. Ones with outer bulbs have the tubing getting hotter, and are
designed to work optimally at such a higher tubing temperature.

- Don Klipstein )