What are LED lights?
LED stands for light-emitting diode, and LED bulbs differ from traditional incandescent bulbs in the way they produce the light. LEDs produce light through the use of semi-conductors and are some of the most efficient bulbs on the market producing around 90% less energy than incandescent bulbs.
LED light bulbs have been around for many years, typically used in gadgets such as digital clocks, TV remotes and as Christmas lights.
But because they have not been widely used for home lighting, they tend to be the most expensive type of energy-saving light bulb. However, the technology behind LED lights is developing quickly so they are now cheaper than they used to be.
Why should I buy LED light bulbs?
There are three types of energy-saving light bulb: compact fluorescent lamps (CFLs), halogens and LEDs.
LEDs are the most expensive, but do have benefits over the other types:
- LEDs use 90% less energy than incandescents (CFLs use 60%-80% less than incandescents, and halogens use 20-30% less).
- LEDs can last for 25-30 years, dependent on use.
- LEDs give out their light quickly at start-up, so you don't have to put up with a few moments of dim light when you flick the light switch.
- LED lights don't contain mercury (CFLs do, although it's only a small amount)
- Our tests have found that LED lights, like halogens, work fine in low temperatures, whereas CFLs don't
An occupancy sensor is a lighting control device that detects occupancy of a space by people and turns the lights on or off automatically, using infrared or ultrasonic technology. Occupancy sensors are typically used to save energy, provide automatic control, and comply with building codes.
There are many ways in which we can be more energy efficient —turning appliances off when we are not using them or buying energy efficient appliances.
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