I had been wondering if I could use CFL in my coop. I am always confused as to what type of light bulbs are safe in 0 or below 0 temperatures. I will check that out. Thanks!
Fass
The issue with pretty much all bulbs isn't cold, it's wet vs the heat they produce (hot glass cold water). Look around the houses in your area and I guarantee you have every single bulb style ever sold or on the shelf at Home Depot is represented on porches and garages. With the wind at my place it used to be pretty common with the old incandescent style bulbs to lose 2-3 every time it rained and the wind blew. With CFL's I'm getting YEARS instead of months.
I've been using CFL's in my coops for years I've never changed one ,or had one fail. Timer brings the light on a couple hours before sunrise, turns off after sunrise, and comes back on for a few hours before dusk.