They've had a good long run, 134 years, but come January most screw-in incandescent lightbulbs will have been phased out because they use too much energy. There's no need to hoard bulbs.
Three: a halogen, a CFL, and an LED. (Rimshot ... to 28 percent less energy than ordinary incandescents: a 100-watt replacement bulb actually consumes 72 watts, while a 60-watt replacement ...
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