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Light Bulbs > Compact Fluorescent Light Bulbs

Which wattage should I choose?

Go back to Compact Fluorescent Light Bulbs
In general, a good rule of thumb for CFL light bulbs is to use a bulb that is one-fourth of the wattage as the standard bulb you are replacing. Since I know math is not the most fun pastime in the world, you can use the list I have below for the common ones.

25 watt standard 7 watt CFL
40 watt standard 9-11 watt CFL
60 watt standard 13-15 watt CFL
75 watt standard 18 watt CFL
100 watt standard 23-26 watt CFL
150 watt standard 32-35 watt CFL

Keep this in mind; the maximum wattage allowed by your fixture is for any type of bulb, so if you can only use a 40 watt bulb in your lamp, that means you can use and CFL up to that wattage, meaning you could now get the light output of a 150 watt bulb in that lamp, since a CFL replacement is less than 40 watts. Try our Energy Savings Calculator to determine your savings with switching to Compact Fluorescents.

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