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According to estimates of the major LED manufacturers, LED luminaires start to be economically cost-effective compared to good-quality Incandescent lamps after only 1500h hours of operation, just over 1 year at 3H / gg, which is only 1/20 of the Led Lights minimum duration.
Despite the higher purchase cost (which, however, is to be compared with other types of high quality lamps and certainly not with consumer products that do not guarantee an adequate efficiency and durability) use of LED as light source is convenient during their whole life.