What types of bulbs are available today for home lighting?
There are three basic types:
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Halogen incandescent
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CFL (compact fluorescent)
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LED (light-emitting diode)
The halogen incandescent is very similar to the traditional household incandescent bulb, except that it is somewhat more efficient.
The CFL is more efficient still, but its use is expected to decline because of the growing popularity of LEDs.
Today, the LED bulb is the most efficient, long-lasting and often the most suitable for home lighting. The new models look very similar to traditional bulbs. The slightly higher up-front cost of these bulbs is mitigated by their very long life.