Energy Saving bulbs Fluorescent energy Saving bulbs Incandescent energy Saving bulbs Metal Halide energy Saving bulbs Energy savers have a number of key benefits over normal incandescent bulbs. They are much more efficient at converting power into light, and not into heat. The energy saving bulb therefore runs cooler, which in many applications also makes them safer. Running cooler, these energy efficient bulbs also last longer. Compare the efficiency (bulb output in terms of lumens per watt) and lamp life of different types of bulb on this chart, which starts with conventional incandescent bulbs at the top. Lamp Life and Efficiency Lamp Efficiency (lumens per watt) Lamp Life (in hours) Reflector incandescent 7 - 19 2,000 - 5,000 Standard incandescent 8 - 24 750 - 2,500 Tungsten-Halogen 12 - 36 1,000 - 3,000 Mercury vapor 20 - 63 12,000 - 24,000 Fluorescent (tubular) 41 - 91 7,500 - 24,000 Compact fluorescent 50 - 83 7,500 - 10,000 Metal halide 56 - 125 10,000 - 20,000 High pressure sodium 61 - 140 12,000 - 24,000 Low pressure sodium 100 - 183 10,000 - 18,000

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