CFL Lamps - All You Need to Know
Compact Fluorescent Lamps or 'CFL's' are generally referred to as 'Low Energy' lamps. They contain fluorescent tubes which are filled with vapour that emits ultraviolet light when electricity is applied. The tubes have a coating inside that turns the ultraviolet rays into visible light. They are based on proven technology and consume much less power than incandescent lamps.
The Advantages of CFL's
One great advantage of these lamps is that there is now a wide range of shapes and styles available and whilst they may not be as bright as Halogen lamps, they are quite usuable and are available in a range of colour temperatures. Prices have also come down significantly over the years and they now offer excellent value for money.
The Downsides
Early versions were slow to light and tended to be large and ugly - these issues are now being resolved and lamps are getting smaller and much more efficient. It's not all good news though as despite what you might hear the light output from a CFL may still be less than an 'equivalent' incandescent and there are still environmental issues in terms of end of life disposal. Because these lamps contain circuit boards they are unlikely to ever be as small as halogen or incandescent lamps.
Choosing a CFL
The key to choosing a good low energy lamp is to check the light output and efficiency rating - an 11w 'A' rated lamp will give more light that an 11w 'B' rated lamp. All lamps should carry an energy rating on the packaging.
Disposal of CFL's
As CFL's contain a small amount of mercury vapour, they pose some disposal issues. Facilities are becoming available at many local recycling and disposal sites to handle them correctly, so please check in your area. LED lamps are NOT affected by this issue.
Use with Dimmers
We at YourWelcome are frequently asked about using low energy lamps with dimmers. The truth is that very few low energy lamps will work with dimmers. There are a few becoming available but they are expensive and relatively bulky. You CAN use a low energy lamp with a dimmer switch BUT you must keep the dimmer switch in it's maximum position - if you try to dim the lamps they will flicker badly and you will reduce their life.
