And finally, there was the “CFLs have mercury – don’t buy them” concerns. This also disappeared within a few years (although the reputation has persisted). Then there was the “the light isn’t incandescent-ey” crowd. From my memory, this issue pretty much disappeared within the first year of mass production. At about $5 each, they resulted in a positive ROI in year 1.īut CFLs have always had their detractors.įirst, there was the “they don’t turn on fast enough” objections. They promised 10,000 hour lifespans, weren’t as unreliable, and (at the time) only used 20W of electricity to produce the same light output as a 60W incandescent – for an energy/cost savings of 67%. CFLs, which hit the mainstream in the late 1990’s, presented vast improvements over incandescents. I went straight to compact fluorescent lamps (CFLs). And, no… light bulb heat is not an efficient means of heating a house.įor these reasons, I had never purchased an incandescent bulb as a post-graduate consumer. Literally, 95% of your cash vanishing in to thin air. At 60W of energy use, only 5% of consumption resulted in visible light – the other 95% as heat. But worst of all was its horrid inefficiency. It was incredibly unreliable (and occasionally explosive). It had a lifespan of about 1,000 hours, on average (merely days if you accidentally touched it with your skin and transferred body oil). The incandescent light bulb needed an upgrade.
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