Features

• While early fluorescent bulbs were too large for use in the home, the newest versions are much smaller, and can fit in virtually any light fixture. Known as CFLs, these bulbs produce a similar quality of light compared to traditional bulbs. They can also be used with dimmer switches and three-way light fixtures. Even the distinctive spiral shape of the bulb is available with a frosted cover, making it indistinguishable from regular incandescent bulbs.
  
  

Long Lifespan

• Fluorescent bulbs last up to 10 times as long as an incandescent bulb, giving them a lifespan of 10,000 to 20,000 hours. In the average household, this lifespan could mean that the bulb lasts up to seven years. This not only means fewer replacements and more convenience for users, but also means that fewer bulbs will end up in landfills.
  
  

Energy Efficiency

• New compact fluorescent bulbs use 75 percent less energy than regular incandescent bulbs. This helps to reduce utility bills related to lighting, and also means that less energy is being wasted to power these bulbs. Improved efficiency also leads to reduced greenhouse gas levels, which can prevent global warming and help protect the environment.
  
  

Cost

• These bulbs generally cost much more to purchase than incandescent bulbs, but over the life of the bulb they can offer significant savings. Because they last 10 times as long, you'll need to purchase only one CFL for every 10 incandescent bulbs. Combined with the reduced energy consumption, each bulb will save users about $30 over its lifetime, according to Energy Star, the U.S. Environmental Protection Agency's energy use rating system.
  
  

Heat

• Incandescent bulbs product light in the form of infrared radiation, or heat. As electricity passes through the bulb's filament, it grows extremely hot, so much so that it glows bright white. Fluorescent bulbs use a different type of technology that produces up to 90 percent less heat. This makes CFLs the safer choice, and can also increase the life of light fixtures and wiring.