Come to the Green Side


When NOT To Use A CFL Bulb
March 15, 2009, 7:00 am
Filed under: Green Tips

Lighting accounts for close to 20% of the average home’s electric bill.  CFLs use up to 75% less energy than incandescent light bulbs and last up to 10 times longer.  However, there are instances when CFLs are NOT the best option.

  • In vibrating fixtures (i.e. ceiling fans, garage door openers) as vibration can cause the CFL to fail.
  • In recessed lights as some fluorescent ballasts are unreliable in ambient temperatures over 120 degrees.  This can sometimes be a problem in enclosed or recessed ceiling fixtures in the heat builds up.
  • With a dimmer switch unless you buy a CFL designed especially for dimmers.
  • In fixtures turned on/off frequently, as CFL bulbs work best if they are left on for over 15 minutes each time they are turned on.  Frequently switching them on and off will shorten the life of the bulb. 

Source:  Hoffman Estates Chamber of Commerce and Industry Newsletter.

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1 Comment so far
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Just some fact corrections:

“Lighting accounts for close to 20% of the average home’s electric bill.”

Yes, but that in turn is only 20% of an average household’s total energy use. This makes lighting about 4% of total energy use. Just to get a proper perspective. (These are figures from public statistics. See my website, post #2 for details.)

“CFLs use up to 75% less energy than incandescent light bulbs and last up to 10 times longer”
Max 50% is closer to the truth and lifespan may vary between CFL model, bulb quality and how you use it. (Again, see my website, post 3m for details.)

The other facts are correct.

Green regards from Halogenica

Comment by Halogenica




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