In the last week I’ve replaced three compact fluorescent (CFL) light bulbs. All were rated to last between 8,000 and 12,000 hours; none had been installed for more than two years. Two of the bulbs were manufactured by Philips. One was installed in a seldom-visited garage 1.5 years ago and had been on for perhaps 1 hour per week. So it lasted 75 hours. I don’t think that it was temperature extremes that killed it because it was stamped “Outdoor”.
How are CFL lifetimes calculated? Are they for turning on the light and walking away for a few years? Does cycling them on and off destroy them much sooner than the published lifetime? My main reason for buying CFL bulbs was that I thought I would be spared the hassle of changing light bulbs, but so far I seem to be running around with replacements about as fast as before (except now it is costing 8X as much).
And who has tried the new LED light bulbs? Are they ready for prime time? I am ready to give up on CFL.