That’s always been the claim. So far experience suggests otherwise.
A few nights ago my desk lamp started blinking. Very annoying and distracting. Acted like a bad connection, which given that I had wired it was not out of the question. But the connections were fine, so I tried a new bulb, and right away ran smack into a storage problem I had anticipated and thought I had solved.
The Secret Lair has lights in two different voltages – worse, it has standard-socket light bulbs in two different voltages. Incredibly, some of these bulbs aren’t even marked. So I put my spares in baggies, carefully marked for voltage. The desk lamp is 12VDC, so I opened the 12VDC baggie and pulled out the one unwrapped bulb, brought it into the Lair…
…and it didn’t work. Because it’s for 120VAC, unmarked, and I carelessly mis-stored it. In the same bag were two 12VDC bulbs in their original wrapping, and one of those works fine – and indeed fixed the problem, which brings me back to the original complaint. Of course I have no notion of how many hours are on that bulb but I do know I wired that lamp into the new 12V lighting circuit in November 2014. So the failed bulb lasted just shy of four years. That would be pretty good for an incandescent. But given that I’m running a scrounged off-grid electrical system, am an inveterate lightswitch nazi and do not leave lamps on for hours and hours, there’s no way that bulb clocked 50,000 hours or whatever outlandish advertising claims there may be. Okay, not surprising, good to know.
Also I’m down to a single spare and need to buy more. Which of course aren’t sold locally.