The Lighting Facts label is required on the majority of light bulb packaging, providing a handy reference for making the most energy-efficient choice.
A: Light Output/Lumens
Measures light output. The higher the number, the more light is emitted.
B: Energy Costs
Estimated annual energy cost of each bulb included in the package based on the average initial wattage, a usage rate of 3 hours per day, and 11 cents ($0.11) per kWh.
C: Bulb Life
The life of each bulb included in the package, expressed in years rounded to the nearest tenth (based on 3 hours operation per day).
D: Light Appearance
Measures light color. “Cool” colors give off a crisp, bluish light and have higher Kelvin temperatures (3,600-5,500K); “warm” colors give off a soft, yellowish glow and have lower Kelvin temperatures (2,700-3,500K).
E: Energy Used
The wattage for each bulb included in the package, expressed as “Energy Used” in average initial wattage.