A couple of years ago I replaced all my light bulbs with those CFL jobs. Not because they're eco friendly, but because they're supposed to save you money on your energy bill and last five years. Well, I've yet to see any savings and I just had one go out on me after only two years. Which, no matter how you look at it, is awesome. I haven't had to buy light bulbs for two years, but if they say five it should last five.