Facts About Lighting

click to enlarge
"Warm light 60" means that this CFL provides the same light as a 60-watt incandescent bulb. "Warm" indicates a color temperature between 2700-3000K.
click to enlarge
Brightness is a description of light output, which is measured in lumens (not watts). Light bulb manufacturers include this information and the equivalent wattage right on the packaging. Common terms are "soft white 60," "warm light 60," and "60 watt replacement." Sometimes a diagram will show two images with an equal sign, as in the packaging image to the right.

To save energy, find the bulbs with the light output you need, and then choose the one with the lowest wattage. You can also look for a CFL that is labeled as equivalent to the incandescent bulb you are replacing.

The color of light may also affect how bright a light appears, even if the lumens are the same. Since most people are used to the soft yellowish glow from incandescent light bulbs, CFLs that produce light closer to the color of daylight (color temperatures above 3000K) may appear brighter because the color of the light is less yellow. Learn more about color temperature.

For more detailed information about how you can reduce your energy consumption and nurture the environment, visit the Environmental Protection Agency.

Information courtesy of www.energystar.gov

Don't be confused about the watts rating on your CFL bulbs. Make sure you know the
Charts and graphics courtesy of www.energystar.gov