• The size and shape of CFL bulbs differs from incandescents.Image by Flickr.com, courtesy of John Steven Fernandez
  
  

Types

• CFLs come in a wide variety of models, from low to high brightness, from bluish to yellowish light, and in coil and standard bulb shapes (with a coil inside). CFLs for dimmer switches are also available.
  
  

Benefits

• CFLs can last many times longer than a regular light bulb.
  
  CFLs use less energy than incandescents of the same brightness, resulting in lower energy costs.
  
  

Problems

• CFLs generally cost more than incandescents, though the cost may be offset by the energy savings.
  
  Some people get headaches when in areas lit by CFLs.
  
  

Considerations

• Those who find the quality of CFL light to be unpleasant or "institutional" could prefer the "soft white" or "warm white" CFLs. These are designed to mimic the type of light incandescent bulbs provide.
  
  

Warning

• CFLs contain a small amount of mercury and should be discarded or recycled as hazardous waste. Some communities have free recycling for CFLs; others charge a small fee.