Facts About Compact Fluorescent Lightbulbs

• Spiral compact fluorescent lightbulbImage by Flickr.com, courtesy of John Steven Fernandez
  
  

Types

• CFLs come in many shapes and sizes. Spiral, tube and covered A-shape bulbs work well in table and floor lamps and some ceiling fixtures and wall sconces. Globe-shaped bulbs usually only work well in pendant fixtures, while candle bulbs are a good choice for ceiling fan lights. Indoor reflectors also work in ceiling fan lights and track lighting. In addition, only use indoor reflector bulbs in recessed can lights. Outdoor reflectors are made for use in outdoor flood lighting.
  
  

Tips

• CFLs need more energy to start up, so once they are turned on, keep them on for at least 15 minutes to maximize their energy usage and extend their life. Constant flipping of the on/off switch makes them less efficient. Don't put CFLs in fully enclosed indoor light fixtures, as the heat generated will lessen the lifespan of the bulb. Buying Energy-Star qualified bulbs ensures their efficiency.
  
  

Misconceptions

• Although some CFLs emit a harsh, bluish light, many are made to emit the same type of warm illumination that incandescent bulbs do. Older CFLs sometimes flicker, but modern bulbs have an electric ballast that prevents flickering light. The mercury contained in a compact fluorescent bulb, around 4 milligrams, is less than that in a thermometer or watch battery and is not released when a bulb is in use.
  
  

Warning

• Compact fluorescent bulbs contain very small amounts of mercury and should be handled with care. Grip the base of the bulb and not the glass when installing and removing. Do not place in fixtures that can be easily tipped over. If a bulb breaks, air out the room for at least 15 minutes and put the pieces in a sealed bag or jar for recycling. Use sticky tape to pick up small shards.
  
  

Disposal

• Although state, county and municipal regulations vary, recycling is recommended for CFLs because the mercury in them can be released into the environment if they go to a landfill. Local waste agencies that accept household hazardous waste will take CFLs. All Home Depot and IKEA stores and many Ace and True Value Hardware stores accept CFLs for recycling at no charge.