I have been putting led bulbs in the house as the old bulbs burnt out. I use the bright white style. Purchased two packs at Bi-Mart on sale for $1.99. The outside porch light worked all winter at temperature's to -17F. I found a shop that sell LED lights and converted the shop from four foot tubes, to four foot led. Brighter no lag coming on and use 10% of the power. Ten bucks for the fixture and ten bucks for the bulb. Eighty bucks and my garage has never been so bright.