LEDs or Light emitting diodes are very small solid light bulbs which are extremely energy efficient. Being a two-lead semiconductor light source, the little diodes emits light when activated. When electricity is passed through them, they release energy in the form of photons, which, we know as light!
Although LED technology has been around for decades, it is only recently that advances in technology, lower cost of LED and increased energy prices have made LEDs ideal for domestic and commercial lighting.
Use less electricity for the same light output - 85% less electricity when compared to conventional lighting and around 18% less electricity compared to CFL. Worldwide, around 20% of electricity is consumed in lighting. LED can make a big impact on your energy use.
Typically LED lamps have a lifetime of 25,000 hours - that is over 22 years if used for 3 hours per day. Plus, with no filament LED lamps are more robust. This will result in you saving money on replacement lamps and building maintenance. Conventional bulbs last around 1,000-2,000 hours (1-2 years) and CFL around 6,000 -15,000 hours (6 to 13 years).
LED lamps switch ON and OFF instantly and are flicker free - There is no warm up time unlike many CFLs
A small amount of Mercury is used in CFL bulbs, making them unsafe if mercury leaks at times of breakage or at times of disposal of worn out bulbs. LED is safe as it has no mercury content.
You may have seen early "Generation 1" LED lamps that looked more like an alien spaceship than a lightbulb, however, there have been massive advances in LED design so that now LED lamps look nearly identical to the filament and halogen bulbs that you want to replace. They even use similar fixtures so your old fixtures don't become redundant.
Over the lifetime of an LED product, less electricity and replacement products are used; saving even more energy in transportation, packaging and maintenance when compared to conventional lamps. All this adds up to lower CO2 emissions, a win-win for you and the environment. As LED lamps are very efficient, they are the perfect product to compliment renewable energy sources such as solar panels or wind power.
LED lamps run much cool unlike traditional bulbs and halogens. Using LED will allow a heating or air-conditioning system to run more effectively. When lamps run cooler they minimise the deterioration to light fittings, shades and decoration which can occur with hot lamps - so your light fittings will last longer.
The range of LED products is increasing and products like LED strips that can change colour and brightness make it easier to produce light effects almost anywhere.
With falling prices of LED products, long-term increases in energy costs tied with improving efficiency of LED, with more light for each unit of energy the argument to switch to LED now is very compelling as payback periods become shorter. Check our rough calculations on your savings on switching to LED from conventional and CFL bulbs.