To help you save energy, we leave our lightbulbs on. And two of our top-rated light-emitting diodes have been cycling on and off for the past eight months. The 60-watt replacement Philips AmbientLED 12.5W 12E26A60, $25, claims to last for 25,000 hours, and Home Depot's EcoSmart LED Downlight 10.5W 65W E26 ECO-575L, $35, claims to last for 35,000 hours. So we keep testing.
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