Light-emitting diode light bulbs and lighting fixtures are known as LEDs. LEDs can have varied designs with a range of looks for many different uses. From the outside, many look like old-fashioned light bulbs and are available to replace a wide range of inefficient halogen and incandescent lighting.
Quality LEDs are now in most cases the ‘best buy’ in terms of electricity costs to run, frequency of replacement and overall lifetime costs.
LEDs are quickly gaining popularity as they become more available at lower prices, however, evaluation of LED products currently available in the marketplace indicates a wide variation in quality and efficiency. This guide provides some practical tips to purchasing a quality LED product.
Not all LEDs are the same
Unlike Compact Fluorescent Lamps (CFLs), LEDs are currently not regulated for energy efficiency – or characteristics such as colour. This means you may experience greater variation in their performance.
Quality LEDs – cheaper in the long run
According to a reasearch of Energy Rating Australia, Quality LED bulbs last 5-10 times longer than other range of lights.
Some important figures showing below:
• LED bulbs last between 15,000 to 50,000 hrs
• Halogen bulbs last between 1,000 to 4,000 hours
• CFLs last approximately 6,000 hours.
The table below shows the total lifetime cost over 10 years for an 800 lumen LED bulb, compared with CFL and halogen alternatives.
These figures are based on lifetimes of 6000 hours for CFL and 2000 hours for halogen; an LED price of $10, CFL price of $6, and halogen price of $3. The electricity rate is 28.55¢ per kilowatt-hour (kWh).
From the figure we could tell that, A 10W LED bulb would cost $39 in total to buy and run over 10 years. Over this time, five 42W halogen bulbs would need to be used at a total cost of $148, or two 12W CFL bulbs would be used, at a total cost of $48.
What is the key figure to know when considering LED
To make sure your replacement LED fits when you get home, check what fitting you need.. Taking your old lamp in to compare against can help.
Light output (Lumens)
The best way to identify a suitable LED lamp replacement for an existing lamp is to look for the amount of light the lamp produces (measured in lumens or lm). Package information that says that the light output was actually tested for this performance is a good sign of a quality product.
The table below shows the number of lumens (and watts) you should look for in an LED as a replacement .
Lumen values do vary between manufacturers.
|Incandescent bulb (in Watts)||Light output in lumens (220/240 Volts) (LED)|
|25 W||250 lm (3-4 W)|
|40 W||500 lm (5-8 W)|
|60 W||800 lm (8 -12W)|
|75 W||1100 lm (11-17W)|
|100 W||1500 lm (15-23W)|
Light sources tested under laboratory conditions will always have a higher light output than the LED bulb used in normal conditions.
All bulbs must be safe to operate.
At a minimum this means they have passed mandatory safety requirements and earned their safety marks.
How long it lasts
There are many factors that determine the lifetime of a LED bulb.
Look for manufacturers that can back up their lifetime claims, either with testing or certification indicated on the product packaging.
For quality LED products the expected lifetime is somewhere in the range of 15,000 to 30,000 hours.
Look for a warranty of at least 2 years for a product claiming a 15,000 lifetime or a minimum of 3 years or longer for lamps claiming a lifetime over 15,000 hours.
Any warranty offered with a product is in addition to other rights you as a consumer have under consumer law.
Look for an energy efficiency rating in lumens per Watt (lm/W) on the bulb and compare with other products. The higher the number, the more efficient the product.
Colour Temperature is measured in Kelvin (K).
LEDs can produce white light in a number of “shades” or “colour temperatures”– from warm-white (similar to regular incandescent and halogen bulbs, 2700 to 3,300 Kelvin) to neutral or cool-white (3,00-5,300 Kelvin) or cool daylight (5,300 to 6,500 Kelvin).
The lower the number, the warmer the light appears.
Some LED bulbs and fittings are colour adjustable. This allows the colour – or colour temperature – to be changed to suit your needs.
The Colour Rendering Index (CRI) is an indicator of how accurately colours can be distinguished under a light source.
The higher the CRI value the better. Better still, if possible, purchase one LED and try it to see if it makes colours of objects appear appropriate before buying more.
Look for bulbs that have a CRI of 80 or above for normal tasks, while a CRI of 90+ is recommended for task lighting where colour is important.
If you have more questions about LEDs or want to order Any LED range products, we offer OEM and ODM solutions, Please feel free to contact us
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Article Resource: Energyratings.gov.au