Why LED Light Bulbs – University Lab Explains

You may have wondered why your neighbor’s light is so bright. They may have been spending a fortune on electricity bills. But they’re not because LED lights allow them to illuminate the whole house without spending a fortune. 

Then, you may ask yourself, why LED light bulbs? LED light bulbs are the optimal choice because they have a longer life and are more energy-efficient than traditional lighting. In addition, they are non-toxic and cost-efficient.

According to Berkley Lab, LED lights (get your 24-pack of Sylvania LED Bulbs delivered to your door by clicking right here). are suitable for up to 50,000 hours. So if you keep it on for 12 hours each day, they can give you 11 years of high-quality life without a need for replacement. Kindly continue reading to learn more.

How long do LED lights last?

LED lights last up to 20 years. This is based on 8 hours of usage for a LED. You can check the LED bulb packaging to understand how long a particular LED light’s expected lifespan is

You may be happy that a single purchase can last that long, but do you know that the claim is misleading? If you’re interested, here’s a simple computation you can use to determine how long your LED light can last:

Average daily use = 8 hours

The number of days in one year = 365 days

Multiply 8 hours by 365 days to get 2,920 hours per year. Therefore, if the expected lifespan is 30,000 hours, then your LED bulb will last 10.27 years (30,000 hours / 2,920 hours).

Now, you may wonder if the light output decreases over time? Of course, it does! However, many LED bulbs are L70, which means a high light output decay point. What does it mean? Your LED light will slowly dim when it reaches its expected lifespan. However, it won’t stop abruptly.

Is there a way to lengthen your LED bulb’s lifespan? Yes! Here are some ways:

  1. Don’t expose your LED light to extreme cold or heat because it can reduce its lifespan. Air humidity and environmental temperature are significant in the bulb’s warranty coverage and lifespan.
  1. Don’t use halogen and incandescent bulbs along with your LED light because the two other lights produce excessive heat as they provide light. Also, if you use your LED bulb near them in a room, you expose it to extreme heat.
  1. Please switch off the lights when not used to prolong the bulb’s lifespan and consume less electricity.
  1. Use a compatible fixture not to damage the LED light. For instance, you should install a 50W LED bulb to a compatible 50W fixture.
  1. Use an LED light that matches your requirements. For example, use the right LED bulbs for business or home lighting.

What are the benefits of LED lighting on the environment?

The LED lighting benefits to the environment are energy efficiency, non-toxic elements, and fewer light requirements. Moreover, you enjoy the LED bulbs longer because of their extended lifespan.

You should take part in caring for Mother Earth. It’s everyone’s responsibility, so you must take the necessary measures to equip yourself with information regarding environmentally friendly processes. So how do you do it? First, you can help reduce waste by recycling and reducing your carbon footprint. 

Do you know that recent technologies allow the reduction of carbon emissions? Even LED lighting helps! Check the list of environmental advantages of using LED bulbs.

  • Energy Efficiency

Compared to the traditional incandescent and fluorescent lighting, LED bulbs are about 80% more efficient because they convert 95% of the energy to light, leaving only 5% of heat wastage. I recommend the Sylvania LED bulbs that are available on Amazon. Click here for the current pricing for a 24-pack.

What about the fluorescent bulb? It can only convert 5% of the energy into light and the rest to heat. It means that a 36W LED bulb can emit the same amount of light as an 84W fluorescent bulb. Moreover, LED uses less energy; therefore, it reduces the demand for energy from power plants and reduces greenhouse emissions.

  • Non-Toxic Elements

Fluorescent strip lights used in many offices contain mercury, a harmful chemical. Upon disposal of the lights, mercury can contaminate the environment. Moreover, a registered waste carrier must dispose of them. On the other hand, LED doesn’t require compliant disposal because it doesn’t produce toxic waste. 

  • Fewer Light Requirements

A LED bulb has better light distribution quality. Moreover, it can focus light in a single direction. Therefore, you need fewer LED bulbs to illuminate a room to achieve the same brightness level provided by their incandescent and fluorescent counterparts. If you want to limit energy consumption, use an LED light instead.

  • Lifespan

Because an LED bulb has a longer lifespan, it also reduces carbon emissions. It can last six times longer than your traditional light types. In addition, it means that you don’t have to replace your light bulbs frequently. As a result, you use fewer lights, and the manufacturer uses fewer resources, logistics, and packaging materials.

LED versus Regular Lightbulbs

If I buy a light bulb, I prefer LED bulbs better than regular ones because they provide a high quality of light. Moreover, they last longer than traditional bulbs. 

Look at the table of comparison below:

LEDFluorescent and CFLIncandescent
Correlated Color TemperatureFrom 2200K – 6000K (yellow to light blue)From 2700K – 6500K(warm white to daylight)Soft White: 2700K – 3000KCool White: 3500K – 4100KDaylight: 5000K – 6500K
Color Rendering Index65-9562-80Perfect 100 for warm lighting
Cycling (On/Off)Instantaneous response to turn on and off; no flickerShort delay upon turn on; may flickerLike LED – no flicker, no delay 
DimmingFrom 100% – 0.5% of the lightOld fluorescent light – not dimmable New CFL bulb – 100% – 15% of the lightDimmable but may affect energy consumption, color temperature, and lifespan.
Directionality180 degrees360 degrees; requires fixture reflectors or housings to direct light to one directionSimilar to fluorescent
Efficiency37 to 120 lumens/wattLess than 30 lumens/watt10 lumens/watt
Efficiency DroopLow overall performance dropMore significant efficiency losses and shorter degradation timeMaintained luminescence until the end of the lifespan
EmissionsMost of the energy consumed is converted to visible light15% loss of emission due to heat and energy dissipationSmall visible light emission: more sizable portion emitted as heat
UltravioletNoneGenerate UV radiation
Failure CharacteristicsGradual dimming over timeLight goes on and off without human intervention before failing completelyAbrupt failure
Foot Candles – the amount of light reaching a particular surfaceGreater than 50 lumens/watt system efficiencyLower than 30 lumens/watt system efficiencyInefficient because it loses much of the energy to heat and light lost to the irrelevant surface area
Heat EmissionsEmits little heat; if used outdoors during winter, requires a visor15% loss of emissions due to heat losses and energy dissipation90% of the energy emitted as heat
Life Span25,000 to more than 200,000 hours7,000 hours to 15,000 hours1,200 hours
Lifetime CostHigh initial cost but low lifetime costLow initial cost but high lifetime costLow initial cost but higher lifetime cost than fluorescent
Maintenance Costs0 maintenance costRequires ballast replacement and relamping, plus replaced of components and labor costFrequent purchase plus labor cost
Shock ResistanceNot easily damaged by physical shocksFragile tubes; requires disposal and handling due to mercury contentFragile
SizeIt can be less than 2mmMore than 1cm in widthIt comes in all sizes and shapes
Cold Tolerance(-) 40 degrees CelsiusNot for temperatures lower than 50 degrees FahrenheitSlight delay because it requires warm-up time
Heat Tolerance100 degrees CelsiusNo objective dataNo objective data
Warm-Up TimeNo warm-up timeRequires warm-up time, depending on the bulbNo warm-up time but may experience short delay at frigid temperatures
WarrantyUp to ten yearsUp to two yearsNone, due to short lifespan
Winter Weather ConditionsRequires proper light orientation or use of visorsNot for outdoor lighting

What are the cons of LED lights?

The cons of LED lights are the following: 

  • a high upfront investment
  • not getting quality sleep
  • temperance dependence
  • the differently perceived color of objects
  • voltage sensitivity.
  1. Not Getting Quality Sleep

The most significant burden of LED bulbs is that they produce more blue light than traditional incandescent lights. Do you know that blue light disrupts your circadian rhythm? So, if you find it challenging to fall asleep and don’t get the sleep quality you need, chances are, your LED light is the culprit.

  1. High Upfront Investment

Unlike their fluorescent and incandescent counterparts, LED bulbs are more expensive because they have a longer useful life. Moreover, they’re energy-efficient too. So they’ll pay for themselves over time.

  1. Differently Perceived Color of Objects

The cool-white LED spectra differs from a black body radiator such as an incandescent bulb or the sun. It means that you may perceive an object’s color differently if you use it. Why is that so? Metamerism causes red surfaces to have a lousy rendering by the phosphor-based LED bulb. On the other hand, the modernized white LED bulbs have better color rendering properties than conventional fluorescent light.

  1. Temperance Dependence

The performance of your LED bulb depends on the environment’s ambient temperature. Therefore, you must provide heatsinking if you use it in the military, medical, and automotive applications where the light operates at varying temperatures but must have a low failure rate.

  1. Voltage Sensitivity

Your LED bulb requires a current below the rating and voltage above the threshold. It means that you must have a current-regulated power supply or a series of resistors.

How do LED lights work?

LED lights work by using a diode that generates efficient lighting. An electrical charge goes through a microchip and brightens the diode to create the light you usually see. 

A light-emitting diode (LED) produces light about 90% more efficiently than the other light bulbs. It has a microchip where an electrical current pass that illuminates the LEDs to create visible light. A diode is just a material capable of casting light upon applying electricity. 

LED is beneficial for general lighting applications and can fit into most fixtures and bulbs. You may see it in the form of conventional light bulbs. However, hybrid approaches make it possible for LED to match a unique light fixture because it provides innovation opportunities for a more comprehensive array of applications than conventional technologies.

LED makes use of heat sinks capable of absorbing the heat it produces then dissipating it to the environment. These heat sinks prevent LEDs from burning out and overheating. Moreover, they are a significant factor for LED lighting to perform better than its fluorescent and incandescent bulb counterparts. On the other hand, you can’t subject LEDs to higher temperatures because their light will soon degrade, and the bulb will have a shorter lifespan.

Each LED bulb varies in heat sink configurations and designs to manage heat. Manufacturers can now design their LED lights in several sizes and shapes because of technological advancements in materials. On the other hand, All LED lights have an Energy Star rating for proper heat management. Therefore, you have an assurance of appropriate light output maintenance until the end of its lifespan.

How to pick the best LED lightbulbs

Are you thinking of buying LED light bulbs but don’t know which ones to buy? Then, kindly read on to learn the tips!

Most stores now sell primarily LED bulbs. But, unlike in recent years, you’ll rarely find incandescent and CFL lights. The reason is that LED is more energy-efficient and provides better light quality than the other bulbs. Here’s what you should know before buying LED lights.

  • Read the Label

Not all LED bulbs are created equal; thus, you must read the packaging label. Also, check the information about light appearance and brightness.

  • Check the Lumens

Instead of checking the wattage, you should consider the lumens. You can find the number of the LED bulb lumens opposite the Brightness text on the label. For example, if you change a 100W incandescent light, you need to pick a LED bulb with 1,600 lumens.

  • Choose the Color Temperature

Opposite the Lighting Appearance text on the label, you’ll find a number referring to color temperature. For example, if you need a bulb for your living room or table lamp, pick a LED light with 2,700K to 3,000K lumens for a warm glow like an incandescent bulb. On the other hand, choose a 5,000K LED bulb for your laundry and workshop rooms for a bluish, more excellent light similar to natural daylight.

  • Select Compatible Bulbs and Dimmers

Most LED lights are dimmable, but they may not work with older dimmer switches. You should check the LED bulb manufacturer’s website to find its compatible dimmers.

Final Thoughts

LED lights are the most-used bulbs in homes and offices. It’s not surprising because they’re energy-efficient and have a longer lifespan. Moreover, you only need fewer lights to illuminate your spaces because they provide high-quality light. So why don’t you try one today?

Aron Blake

I am the lead copywriter on Homezesty and the Webmaster. I have a lot of experience in home renovations and the creation of style. I enjoy writing and sharing my tips on how to create the best living environment. My Linkedin Profile, My Twitter Account

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