LED bulbs, or Light Emitting Diode bulbs are far more efficient at turning energy into light than fluorescent bulbs. They are the most energy efficient bulbs available today and last much longer than any other bulbs. Although very expensive, the price is expected to come down over time.
In general an energy saving bulb will be much more expensive to buy than an incandescent bulb, but much cheaper to operate as it uses only a fraction of the electricity. Ideally the money saved in use more than offsets the purchase price making an energy saving bulb cheaper over its entire lifetime, but in reality this may not be the case.
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Flourescent light bulbs are approximately double the price of a standard bulb. There is an advantage to them though, they last longer and are more energy efficient.
Energy saving bulbs reduce electrical consumption by about 75%, reduce bulb changes by x10 to x50 times. The savings in electricity and their endurance more that compensates for the higher purchase price.
The best UV light bulbs are made by Sylvania and Philips. The downside of the story is that UV light bulbs of those brands are among the most expensive on the market.
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There are two different technologies, fluorescent, and LEDs. Fluorescent light bulbs are more common; LEDs are still too expensive for mainstream use. +++ LED lamps' prices are now very competitive, certainly where I live, and make up for the unit price difference in reduced electricity consumption for a given light output. I have a mixture of incandescent, CF and LED lamps in my home, and slowly going over to LED as the existing lamps expire.
LED bulbs have a longer life and convert more electricity into light than other bulbs but the price to buy them is still very high.
Due to increase in price of the latest technology these companies have hiked their product's price. However, even after hike of the price these products are energy saving which ignores the hike of 15%. I don't think this little price change will affect the usage of energy saving lamps. Anyway Havells is the best company to reduce the electricity bill.
Xtralights.com is a great place to buy a couple of LED light bulbs. Not only are they very affordable but they have an extensive selection to choose from.
Wal-Mart sells fluorescent light bulbs for very reasonable prices. They range from ten to thirty dollars. The bulbs that Wal-Mart sells are usually of good quality. IF you have any problems with them, they can be returned with original packaging and the receipt.