Make the switch
Compact fluorescent light bulbs, or CFLs, use fluorescent light technology in a compact size that can be used in place of standard light bulbs. Fluorescent tubes, or T-8s, are also available and can be used in overhead fixtures in garages, kitchens, laundry rooms or workrooms.
Energy savings
Compact fluorescent light bulbs use 70 percent less energy than standard incandescent light bulbs according to manufacturers’ estimates. By replacing just one 75-watt incandescent light bulb with a 20-watt CFL, you could save an estimated $13 a year on your energy bill.*
Longer lifespan
CFLs last an average of 10,000 hours, compared to only 850 hours for a standard incandescent
light bulb. That means you’d replace about 11 incandescent light bulbs in the time it would
take for one CFL to wear out. They’re great for hard-to-reach areas.
Use in existing fixtures
CFLs come in a variety of shapes and sizes. Check your fixture before you buy so you are sure to get the right size CFL. Dimming and three-way switch applications require specialty lamps.
It’s especially smart to replace halogen torchiere floor lamps with CFL torchieres. Halogen
torchiere floor lamps can generate excessive heat and create fire hazards. CFLs are cooler, safer and use 60 percent to 80 percent less energy.
Outdoor use
Exterior lighting is one of the best places to use CFLs because of their long life. If the bulb
will be directly exposed to moisture make sure it is “wet location listed.”
Light output
Divide the wattage of your incandescent bulb by four to determine the CFL wattage you’ need. For example, if you want to replace a 60-watt incandescent bulb with a CFL, purchase a CFL that is close to 15 watts (60 divided by 4 is 15).
Warm light
CFLs are available in a range of light output colors. Choose a CFL rated near 3000K for a warm look similar to an incandescent light bulb. The higher the Kelvin (color temperature) rating, the brighter and whiter the light.
Silent, clean operation
Today’s fluorescent lighting technology has improved, eliminating the flickering and humming you may have noticed with fluorescents in the past.
How to buy CFLs
Like many other things in life, you tend to get what you pay for. For best performance, be sure to seek out high-quality Energy Star® CFL bulbs from a reputable manufacturer.
For more information on finding the right CFLs for your needs, see our buying guide.
Disposal of CFLs
All fluorescent lights contain a small quantity of mercury, and therefore should be disposed of properly. For more information and disposal sites, see how to dispose of CFLs.
*Note: You will need the Adobe® Acrobat® Reader to view and print PDF files. Visit the Adobe Web site for downloading instructions.
