Light up your house for less with our illuminating guide to LED bulbs

Spend some time in the light bulb aisle of your local hardware store, and you’ll become familiar with the Federal Trade Commission’s lighting facts label. It sort of resembles a nutrition label and is meant to help you compare between bulbs. All light bulbs should have information on their brightness (measured in lumens), cost per year, life span (in years), color temperature (measured in Kelvins), and energy use (measured in watts).