when we think "energy efficient lighting", we immediately think, "compact fluorescent bulbs!" However, this is not the entire story.
In fact, there are a number of different options for increasing the energy efficiency of your lighting, even if you are not using CFLs. discuss the various options and how you can use them to lower your energy bill and protect the environment.
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I have seen people turning on the lights after 6pm in all rooms even when they do not use that room.It is better to switch off the lights which do not use.