Adopting to LED light saves electricity, money and extra maintenance cost too. This happens only when you switch to High-Quality LED Lighting products only. Find out which factors you should consider from Packaging Labels for getting best quality Led light products from Market.
LED and CFL bulbs have revolutionized energy-efficient lighting. Even here you can say that CFLs are a temporary solution to energy-efficient lighting, while long lasting, durable, more efficient, eco-friendly… LED lights are replacing incandescent bulbs broadly. You can easily find out best quality Led light products in the market, simply considering some important factors like power factor, light appearances, CRI, etc. available on packaging labels. Get informed about such key factors in details here, and select the best LED for the best result.
6 Factors to identify Best Quality LED lights
There are six factor you should consider to buy best quality LED light for any application.
- Lumens Per Watt
- Power Factor
- CRI (Colour Rendering Index)
- Colour temperature
- Heat sink
- Life of LED Chip
1. Lumens Per Watt
Gone are days when the strength of light bulbs was measured in watts. Actually, it is a measure of power. In time of incandescent light bulbs, the strength for lighting was checked by wattage rating, wherein a 100-watt lamp can put out more light compared to a 60-watt lamp. Reason is that incandescent lamps use the same filament material but 98% of the energy is wasted on heat and only 2% is spent on making light. So, the only way to raise their light output is to increase the wattage. It was our mindset to look wattage on the light packaging to know how bright it would be. But actually, wattage rating has nothing to do with how bright the bulb is.
Newer types of bulbs consume much less power compared to old-style incandescent light bulbs. For ex. LED light bulbs spend over 90% of their input energy on light instead of heat.
The new unit of measurement for light bulbs is Lumens. Lumen scale describes how much light or brightness the human eye can perceive – the higher the number of lumens, the brighter the light. For example, an average 100-watt incandescent bulb can produce about 1,600 lumens. All modern light bulb packaging shows how many lumens the bulb can produce.
The right way to measure efficiency of any light sources is based on how many lumens they can produce per watt. We consider kilometers per littler to measure fuel efficiency of the car, just like the lumens-per-watt rating to check how energy efficient the bulb is. 9 to 12 watts LEDs can produce the same number of lumens as standard 40- or 60-watt bulbs. So if you want to replace a 60-watt bulb, go for an LED bulb that produces close to 800 lumens; while for a 40-watt bulb, go for 450 lumens.
One thing for sure is that lots of brands produce LED lighting products having their own standards. You can choose the best one considering the following guidelines.
The chart indicates that as high as Lumens-per-watt of the lighting, wattage consumption goes down. Ultimately, you can save more money with low-wattage lighting. Let’s understand clearly with practical example.
Let’s take and example, your requirement for the 2BHK home lighting is 14300 total Lumens.
Now, if you purchase lighting with 110 lumens-per-watt (tagged as Best Quality Standard in the chart), you just require 130 watts power consumption
If lighting comes with 100 lumens-per-watt, you require 143 watts power consumption.
For lighting with 90 lumens-per-watt, you require 159 watts power consumption.
For lighting with 80 lumens-per-watt, you require 179 watts power consumption.
For lighting with 70 lumens-per-watt, you require 204 watts power consumption. This is almost 56% more compared to lighting with 110 lumens-per-watt.
Here you can simply check the difference that if you opt for lighting with 70 lumens-per-watt, you wattage consumption would be increased upto 56% than of lighting with 110 Lumens-per-watt.
Let’s check the real market scenario with leading brands.
Check out: Price List of Top Rated LED Bulbs
If you are really concerned about wattage consumption, then have a look at this chart: EverReady LED Bulb offer 100 Lumens-per-watt, also Charlston GlowUp offers 90 Lumens-per-watt but SYSKA SSK-LB offers only 70 Lumens-per-watt for the same 5W power consumption.
Next important thing is that no doubt you can save a good for opting light with higher Lumens-per-watt, but you may have to pay bit more as light offering higher Lumens-per-watt are quite expensive. However, this would be initial investment, as the cost will be recovered by its amazing power-efficacy in less than 2 to 4 years. So, whenever you look for the best Led Light bulb, you should first search for the bulbs that produce the number of lumens you want for enough brightness. Then, checkout the lumens-per-watt rating to find the bulb that is most energy efficient.
Note: Light Packaging don’t show lumens-per-watt directly, take total lumens that shown on the packaging and divided with Wattage and the product will be lumens-per-watt.
2. Power Factor
Power factor is really a vital parameter to check quality of any electrical instrument. Power Factor is the effective ratio of real power (used power at load) to apparent power from your meter. Intelligent buyer is who not only check wattage of any LED Light but who also check power factor with wattage.
Let’s take a real example of 2 BHK Home. Total LED wattage for 2BHK Home is around 120-150 Watt. Lights with high lumens can luminate your room around 120watt, but if you opted for quality LED Panel light then you need to go around 180-200 watt. Let’s assume general life of LED is 20,000 Hours. However there are LED Lights available in market that give more than 50,000 hours of life warranty.
|Total Wattage||Power Factor||Actual Consumption (Watt)
||Cost per life
In simple example, if 7watt LED light packaging label shows 0.7 power factor then it actually consume 10watt. In short, LED lights with power factor of 0.9 and above are high in quality.
3. CRI (Color Rendering Index)
CRI may be new to you…but it is important one to consider if you are concerned about the light source’s ability to show object colors “realistically” or “naturally”. It measures the effect a bulb has on the perceived color of objects based upon an ideal or natural light source. For ex. it is indicator of how “natural” an object’s color appears when illuminated …as blue looks blue or green; red looks red or purple; etc.
CRI is rated on a scale from 0 to 100 and only Sunlight is classified as having a CRI of 100. Colors look exactly like they should underneath a light scoring CRI of 100. So the simple concept: the higher the CRI, the better colors will look and if the lower the CRI, the worse colors will look.
The chart indicates that LED is second one with higher rating of CRI following incandescent/ Halogen. However, research and development continues to improve LED lighting up to 100.
Generally, lighting with a CRI of 85 to 90 is considered to be “very good” while a CRI of 90 or greater are “excellent” that can be used for tasks requiring very accurate color discrimination. You require lighting with high CRI for places like art galleries, museums, or jewelry stores where objects are on display. And for residential lighting, there’s no need of bulbs with a very high CRI, especially in places like the living room or the kitchen. Lighting with a CRI below 70 make colours look washed out, and can even change the color of objects. For example, the lights you see in highway fixtures is a very yellow light having a very low CRI that makes colors harder to differentiate.
4. Color temperature
LEDs are available in wide colour temperature range from 2800K to 6500K as mentioned below.
Warm white: 2700K-3500K (dusk time yellow light)
Neutral white: 4000K-4500K (bright sun light little yellow)
Cool white: 5000K-6500K (pure white, cool day light)
In LED color temperature of around 2700K to 3300K gives same colour tone (yellowish light) as conventional incandescent or halogen lamps.
Some local companies do not describe colour temperature specifications in Kelvin, but they simply label them with “Natural White” or “Office White”. Branded Companies always mention actual specifications so be sure that which colour temperature you are selecting.
Let’s check real example of same picture taken under all available LED Light colour temperature. Generally buyer choose Cool White for home and office use. Warm white is used in restaurant and hotels.
The colour temperature surely affects the colours of things you are seeing than actual. So be careful while selecting colour temperature of LED light according to your application and need.
5. Heat sink
Don’t forget that for LEDs to last a long time, they need a heat sink. That’s why LED bulbs have metal fins that go down the side, making them look different than the classic Edison-style bulb. Heat sink dissolves any excess heat and maintains the LEDs at best operating temperature as well gives boost in terms of life to main LED chip.
6. Life of LED Chip
At this point, LEDs really score high as its life typically ranges from 20,000 to 50,000 hours. Therefore, LEDs are idyllic for use in areas where maintenance is difficult or long life is essential.
Still confused which brand you should select? Don’t worry we have done homework for you. Check this out: Top Indian branded LED Bulbs Compared