Bulbs that take 0 to 15 seconds to reach near ... and over 63 seconds scored poor. The Sylvania Ultra-LED 100W LED20A21/DIM/0/827 is part of the Lightbulbs test program at Consumer Reports.

First and foremost, LED lights consume much less energy than traditional incandescent light bulbs, which can save you money on energy bills over time. For example, ‘switching a traditional 100w ...