[TigersEye]

You can’t heat a chicken coop with a fluorescent bulb.

[PROCON]

You can’t heat a chicken coop with a fluorescent bulb.

Hey pal, I'll hook you up a 3 phase, 480 volt metal halide light that'll not only keep your chickens warm, but you can turn the rheostat up and bake 'em when your ready to eat 'em..:=)

[ApplegateRanch]

You can’t heat a chicken coop with a fluorescent bulb.

Or the pumphouse, either.

First line of defense is a 60W bulb, which is often enough to keep the heat tapes on the pipes from kicking in.