Just like incandescent bulbs are labeled soft white, cool white, bright white, etc., you will find ENERGY STAR qualified CFLs labeled soft white, cool white, or daylight (similar to bright white). When selecting a new CFL, it is a good idea to use the same color type as the incandescent you are replacing. Another way to do this is to look for the scientific color designation known as correlated color temperature (CCT) on the packaging: 2,700K, 3,000K, 5,100K, etc. Lower CCT numbers mean the light will be warmer white (yellowish), while higher numbers mean it will be cooler light (bluish). Matching these numbers gets you consistent color. The majority of CFLs available in the market offer soft or warm white light (2700K-3000K), which is comparable to an incandescent bulb. When changing out multiple bulbs in one room, select ENERGY STAR qualified CFLs with the same color and the same manufacturer to help ensure more consistent light color. More information on CFL colors.
energy efficient products
ENERGY STAR products are independently certified to save energy without sacrificing features or functionality. Saving energy helps prevent climate change. Look for the ENERGY STAR label to save money on your energy bills and help protect our environment.
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ENERGY SAVINGSat home
energy savings at home
Improving your home's energy efficiency with ENERGY STAR can help to lower high energy bills, improve comfort and reduce greenhouse gas emissions. Learn about the many ways to save in your home and track your progress with "My ENERGY STAR" - your new dashboard to savings.
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ENERGY EFFICIENTnew homes
energy efficient new homes
A new home that has earned the ENERGY STAR label has undergone a process of inspections, testing, and verification to meet strict requirements set by the US EPA. ENERGY STAR certified homes use 15-30% less energy than typical new homes while delivering better comfort, quality, and durability.
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ENERGY STRATEGIES FORbuildings & plants