GraySquare Solar - What are the best energy efficient light bulbs: The most energy efficient light bulbs are compact fluorescent light bulbs, or CFLs, and LED bulbs. CFLs use mercury to cause
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Sylvania ECO LED A19 Light Bulb, 60W Equivalent, Efficient 9W, 7 Year, 750 Lumens, Non-Dimmable, Frosted, 5000K Daylight 3-8 Packs (40987), Tools & Home Improvement - Amazon Canada
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