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Energy Saving Light Bulbs were until recently all "Compact Fluorescent Lamps (CFL). A characteristic of that type of bulb is that it has to come to full operating temperature in order to produce its rated output of Light (meas in Lumens). In a cold environment (outside in Winter), CFL's take even longer to gain brightness. There are some bulbs now that are supposed to 'instantly' start at maximum output, but they are more costly.

Competing with the CFL Bulb now is the Light Emitting Diode Lamp. It uses even less Wattage than the CFL for the same output rating, and is supposed to last even longer. Currently it is more expensive than the CFL.

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12y ago

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