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Ask G: Light dimmers

Does turning the dimmer down on a light actually reduce the amount of power that you use?

Does turning the dimmer down on a light actually reduce the amount of power that you use?

Dimmers

Credit: sxc.hu

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Using the dimmer does save some energy. However, using the right wattage bulb for the desired lighting level without dimming is more efficient and will save more energy. Note that only certain types of CFL globes are suitable for use with dimmers. Dimmable CFLs will state their suitability on their packaging.