May 062013
 

Kozzi chinese fortune cookie 441x294 300x200 The Difference Between LEDs and CFLs: The Future
This is the concluding post in a series exploring the differences between LEDs and CFLs. To read the entire series, click here.

We’ve spent the last several weeks figuring out all the ways LEDs and CFLs are different. We’ve learned practical facts about each light source, like LEDs have longer rated lives, CFLs contain mercury, LEDs are more durable, and CFLs emit omnidirectional light (to name a few). All this makes for an excellent understanding of the current state of lighting technology.

Today, LEDs and CFLs are still rivals on the market. But will it always be like this?

The development and improvement of LED technology is still taking place, while the CFL’s technological development has reached an endpoint. It’s really thanks to LEDs that we’re in the midst of a very dynamic lighting revolution.

Since CFLs are already completely developed as a viable lighting technology, many lighting specialists think of them as the bridge between old incandescent lights and innovative LED lights. They’re an effective, efficient bridge, but a bridge nonetheless. We don’t expect CFLs to be popular forever. Continue reading »

May 032013
 

Kozzi mid section of a person with hard hat and tool belt 312x416 224x300 The Difference Between LEDs and CFLs: Durability
Do you know what makes an LED different from a CFL? In this blog series, we’re explaining just that!

We all know incandescent light bulbs are delicate. You break that filament, and it’s lights out (literally). It’s easy to understand why our basic incandescent lights are so fragile – we can see and understand the simple internal structure at a glance. But, when it comes to understanding the capabilities of LEDs and CFLs, the answers aren’t as straightforward. Both light sources use more complex systems to generate light, but does this make them any less breakable?

It’s time to dive a little deeper.

LEDs:

Since LEDs don’t use a filament, they can easily withstand almost any kind of jarring vibration. When you’re rough on LEDs, transporting them from place to place while in use, or keeping them in jolt-prone spots (like in and around elevators), you don’t have to worry about easily breaking or damaging them. Continue reading »

Apr 302013
 

LED Reflector Lamp The Difference Between LEDs and CFLs: Glass Envelope
If you’re deciding which light source to use for your next project, look no further! In this blog series, we’re going in-depth to explore the differences between LEDs and CFLs, so you can make the best decision. In this post, we’re talking about structure…

LEDs and CFLs are built very differently.

LED light bulbs use glass or plastic envelopes of almost any thickness. They’re built to last, even in the most demanding circumstances. CFLs, on the other hand, have a daintier construction. If you drop one, the thinner glass envelope could easily break. This can be a problem, especially because CFLs contain trace amounts of mercury that will be released when the light bulb shatters.

To prevent CFLs from cracking so easily, some manufacturers have begun encasing CFLs in silicone coatings, so even if the glass breaks the shards and mercury will stay within the silicone, not allowed to get into your environment. The CFL’s traditional spiral is covered by a more conventionally shaped envelope like this: Continue reading »

Apr 192013
 

Kozzi dark sunglasses 441x294 300x200 The Difference Between LEDs and CFLs: Infrared and UV Radiation
We won’t rest until we’ve explored every way LEDs and CFLs differ! This post is part of a series doing just that. So far we’ve covered everything from the basics, like rated-life and energy-efficiency to more complex topics, like how each source performs in cold temperatures. Click here to explore the entire series.

Radiation. We’re talking about lights here, so the topic was bound to come up sooner or later.

Infrared Radiation (IR)

First of all, it’s a myth that LEDs don’t generate heat. All light sources generate some heat, and LEDs are no exception. Excessive heat can damage an LED or lessen its rated life – so it’s essential that LEDs have well designed “heat sinks” to dissipate the heat generated in the rear of the LED.

This myth may have originated from the very true fact that LEDs don’t emit infrared radiation in the same direction as the emitted light, unlike other light sources.

A CFL, on the other hand, does emit IR and can get very hot to the touch. Continue reading »

Apr 162013
 

Directional LED Display Light 198x300 The Difference Between LEDs and CFLs: Directionality
This post is part of a series exploring how LEDs and CFLs differ. Click here to browse the entire series.

LEDs and CFLs aren’t always suited for the same applications, because they emit light differently. LEDs are made to emit light in one general direction, while CFLs are omnidirectional, emitting light in all directions, just like incandescent light bulbs.

The LED’s directional light beam is very convenient for many applications because there’s little to no wasted light emitted away from the area you want to illuminate. However, this can get problematic when you replace an omnidirectional light source with a directional LED.

Directional LEDs are perfect for task lighting, display lighting, focused accent lighting, and even for use in recessed cans. Omnidirectional CFLs will work better for decorative lights, like table lamps, chandeliers, and ceiling fans, when you need even light coming from all sides of the light bulb.  Continue reading »

Apr 122013
 

Stock Photo Dimmer The Difference Between LEDs and CFLs: Dimmability
LEDs
and CFLs. To the untrained eye, they might just seem like comparable alternatives to the incandescent light bulb. But when you dive a little deeper, you’ll find that they’re very different. That’s just what we’re doing in this blog series – you can view the whole series here.

Dimming. In a world where customization is king and energy-saving is of ever-increasing importance, dimming lets you have both. Putting your lights on dimmers saves electricity, using 10% less power when you dim the lights just 10%. (And more if you dim them lower.) Dimmers also let you tailor the lighting scheme to whatever you’re doing.

But, are LEDs and CFLs any good at dimming? Turns out there’s a bit of a discrepancy… Continue reading »

Apr 082013
 

LED 300x269 The Difference Between LEDs and CFLs: Instant On
LEDs and CFLs are both popular energy-saving light bulbs. But, we consider CFLs the light source of the present and LEDs the light source of the future. In fact, we’ve devoted an entire blog series to explaining that concept, comparing everything from rated-lives, to how each light holds up in cold weather…

They say the good things in life are worth waiting for. But, that’s not the case when it comes to your light bulbs’ start time. When you flip a light switch, you want immediate results. If you’ve been using incandescent lights all these years, you’re probably used to that luxury.

So, you might not expect a CFL  (a light bulb more technologically advanced than an incandescent) to take longer to reach its complete light output. CFLs, even the best CFLs, can take anywhere from 1 to 60 seconds to reach their full brightness.

Why do CFLs have this delayed start?

Well, an incandescent light bulb produces light when an electrical current flows through its filament. The filament heats up and glows. CFLs, on the other hand, use a more complex system to produce light. Cathodes within the lamp heat up to about 900 degrees Fahrenheit and pass electrodes from one end of the lamp to another. This excites the mercury vapor inside the lamp, creating UV light. The UV light must then pass through the white coating on the inside of the glass envelope to produce visible light.

So, what about LEDs? Do they have a delayed start? Continue reading »

Apr 012013
 


LED Hanging The Difference Between LEDs and CFLs: On/Off Cycling
Here’s another post in our series about the differences between LEDs and CFLs. So far we’ve covered everything from efficiency to safety. Click here to see the whole series.

Turns out, if you use CFLs and LEDs in the exact same way, they’ll react differently. Sometimes, the results can be damaging.

It’s a common myth that turning your fluorescent lights on and off frequently will increase your energy bill. While CFLs do use more energy to start up, it’s only equivalent to lighting the same lamp for a few extra seconds.

What you’ll need to watch out for is the price of replacing that CFL.

The rated life of a CFL, like all fluorescent lamps, can be dramatically reduced if the lamp is cycled on and off frequently.

The rated lives of LEDs, on the other hand, aren’t affected if you turn the lights on and off on a regular basis.   Continue reading »

Mar 292013
 

Kozzi snow machine trail 294x442 200x300 The Difference Between CFLs and LEDs: Low Temperature Tolerance
This post is part of a series written to help you understand the differences between the popular CFL (compact fluorescent lamp) and the newest kind of light bulb: the LED (light emitting diode). You can browse the entire series here.

Depending on where you plan to use your light bulb, you may need to consider how it will react to the space’s temperature.

For a chilly area, like outdoors in a cool climate or inside a refrigerator/freezer, an LED will work best for you.

LEDs love cold environments. In fact, using them in places with cooler temperatures may even make them last longer – beyond their standard rated lives. 

CFLs, on the other hand, require a lot of heat to initially turn on. When you operate them in below-freezing temperatures, you’ll have a hard time even getting them to start up.

So why do LEDs thrive in cooler temperatures? Continue reading »

Mar 262013
 

Clock The Difference Between LEDs and CFLs: Rated Life
This post is the third in a series focused on identifying important differences between light emitting diodes (LEDs), the light source of the future, and compact fluorescent lamps (CFLs), the light source of the present. To check out the rest of the series, click here

When deciding which light source to choose, one of the most important factors you should consider is how long the light will last.

A longer-lasting light bulb means you won’t have to spend as much money on replacement light bulbs, and you won’t have to waste time and energy on maintenance and upkeep.

In general, LEDs last about 10 times as long as CFLs. An LED’s rated life can vary between 25,000 and 60,000 hours. The rated life of most CFLs varies between 6,000 and 15,000 hours. Continue reading »