13.03.2014
But what if there was a way to save money, while at the same time massively reduce the frequency of light bulb changes? Probably the most important, yet most overlooked, factor in choosing an LED bulb is the color… or more precisely, the color temperature. Apart from your light’s color, you also need to decide how bright you want your light to be. Another major benefit of LED bulbs is that they operate at a much cooler temperature (actual temperature, not color temperature) than traditional bulbs. For me, one of the biggest benefits of LED bulbs is that they last longer than traditional incandescent or halogen bulbs.
My favorite stand-alone LED bulb is also made by CREE, and I’ve also been able to find them at Home Depot and Amazon. I also love these Feit Electric candelabra base LEDs, which are perfect in our entry chandelier. I also have to give a shout-out to Phillips, who have been making great LEDs for a while now. I recently swapped out my halogen bulbs in my driveway pedestals for some 40W Equivalent 2700K Clear Blunt Tip Decorative LED bulbs (candelabra base for the entry pillars, and standard base for the rest of the driveway and garage sconces). Whichever brand you choose, I recommend keeping an empty box (or snapping a photo of the package) so you can remember which bulbs you liked for a specific application. If you’re new to LED bulbs, my advice is to buy a few different versions or brands for your application, then install them and see how you like them. The other possible drawback is that some older timer and motion sensing switches are sometimes not compatible with LED (or CFL) bulbs. And speaking of the packaging, this is more of a vent than an actual drawback of the product, but it seems the packaging for LED bulbs is overkill.
So instead, I’ll simply remind you that I always welcome your questions, comments, and feedback below! Your triptych illustration of the effect of different color temperatures was quite illuminating. I’ve found that the up front cost of the CFLs are slightly cheaper, but the LEDs are catching them quickly. Great article Steve – I was just about to embark on my own LED research project to convert the office over to LEDs, and this is a great help. I bought 12 Cree 9.5watt 2700K bulbs for a nice Italian restaurant I take care of here in San Francisco, to replace the 60w incandescents they were using (inside of big white globes). Wonderful post highlighting the key features of the LED Bulbs in comparison to other lighting fixtures. You are right on — 2700K is normal incandescent, and to me (and to most people) is too yellow. I’ve begun searching for LED bulbs, but have been reading about problems putting them in enclosed fixtures, due to some heat problems.
I just did most of my house in 2700k, with the bathrooms at 3500k and the basement garage at 5000k.
Honestly, I’d replace all of the 2700k with 3500k if I could, at least outside the bedrooms. I just wanted to take the time to thank you for explaining he differences and for showing us example of the LED colors. I also bought a set of 3 Philips hue bulbs for fun but don’t recommend these for general lighting. Because of the dimmers I use in my home (Insteon) I rarely have any of these bulbs on full anyway, further increasing the savings over time, and since they’re dimmed so often, I want them to change colors to suit the night-time dimmed effect I came to love in the past with dimmed halogens. Other problem it that virtually every ceiling fixture is fully enclosed (metal back with either globe or flat frosted glass on the bottom).
Oh, if the package says NOT to include in enclosed fixtures, then there must be a reason (perhaps it gets hotter than other LEDs?). Steve Jenkins, I dont fully agree with your article suggesting 2700k being suitable for kitchens and bathrooms! Also, besides the color temp, some bulbs have different lens (coverage) over the LEDs, which might affect the look a bit. Probable a stupid question but why do you suggest replacing existing can light fixtures to use with the LED br30s. I plan to do some experimenting with a couple rooms, one with windows and one without, both with dimmers and see what I think. Los LED son dispositivos muy adaptados para la iluminacion debido a las varias ventajas comparado con las tecnologias tradicionales (incandescente, fluorescente, vapor de mercurio…). La primera ventaja, que es probablemente la mas significante de todas, es su alto rendimiento. La tecnologia LED esta basada en el uso de un semiconductor a diferencia de las otras tecnologias que necesitan un gas (fluorescente, mercurio, tungsteno, sodio…), en general contaminante, para funcionar. Al contrario de las lamparas de mercurio o sodio o de las bombillas de bajo consumo, las lamparas LED ofrecen un encendido inmediato sin necesidad de calentamiento. Con la bajada de precios que se observa desde hace 3-4 anos, los LED se plantean como una alternativa economica y ecologica, proporcionando un mayor confort visual a sus usuarios. Si esta interesado en una sustitucion a LED, puede utilizar nuestra calculadora para determinar su ahorro.
GMD Solutions es una empresa de ingenieria especializada en disenos integrales creada en 2012 por cuatro Ingenieros Superiores de diferentes ramas de la ingenieria. But not all DIY projects are created equal — and the least equal is replacing light bulbs. That’s exactly what LED light bulbs and fixtures can do for the DIY handyman (or handywoman). There are some specifics to watch out for, and tips for picking the right ones for your application.
Instead, flip the packaging over and look for a section on the packaging that shows the color temperature in degrees Kelvin.
The 2700K bulbs are a softer more traditional look, while the 3000K bulbs are slightly harsher, but not too harsh that it looks bad. That color is so cool that it has a blue tinge to it, kind of like modern Xenon headlights.
They can put out the same amount of light output (lumens) as a traditional 40 watt bulb… while only burning 8 watts!


That fixture takes 18 bulbs, and these all burn 4.8 watts each, instead of 40 watts each like a standard bulb. I like their color and light output, but they tend to be far more expensive than other LED options.
That will help you eliminate visual differences between bulbs in the the same room or application. The dimmable ones are sometimes slightly more expensive, but worth it if you need that function. Most of the LED bulbs I buy come in huge plastic blister packs, or bulky boxes with excessive cardboard and 2-3 times the packaging material they really need.
I usually use high lumen 3000K bulbs for those areas, but have a few 3500K bulbs for some of those places too. I haven’t personally tried either of those, but I’ve had good luck with the Feits, so report back if you try them!
I don’t know if the warmer look of dimmed down incandescents is real or an illusion, but anyway, they like to dim them down for the evening dining mood, and the LEDs are too much on the coolish side, when dimmed down. Some bulbs specifically say not fir use in enclosed fixtures, others don’t say anything about it. We are adding them to our living room and our new kitchen and this article has been a great help. The bulbs are different brands, same lumens (800), all A-19, but different Kelvin #’s. Yes, they did cost a little more, but recently I’m starting to find the price come down. Bought Phillips 40w dimmable with candelabra base, but they will not turn completely off, even when you push the dimmer switch in (its an old spin type)… Does this mean we just can’t use LED or is there some way to fix this? I saw some today at home depot that looked small enough to fit, but wasn’t sure if it was a safety or bulb life issue. It depends on the size of your kitchen as well as the colouring layout of walls, units and floors.
Before I begin my bathroom renovation next month, I have 2700k standard lights in the centre of my bathroom and they are awful. I bought track lighting with 12 LED 4000k bulbs – just going off of the temp scale, and you are right. The Neon Border LED is a flexible tubing system using high output LED technology enclosed in a colored PVC extrusion. En un ambito industrial, la sustitucion de luminarias puede necesitar la subcontratacion de un equipo exterior especializado (lamparas en altura, altas tensiones, ausencia de un equipo de mantenimiento interno…) y el coste se puede disparar rapidamente.
Si se rompe una bombilla LED, no hay ningun riesgo de contaminacion al contrario de un tubo fluorescente o de una bombilla de bajo consumo.  Por esta misma razon, se consideran los LED menos contaminantes a la hora de reciclar. Sin embargo tienen algunas otras que no son menos importantes (sobre todo a nivel economico) como por ejemplo su facil regulacion tanto en intensidad como en tono o su baja emision de calor (si instalamos bombillas, es para iluminar, ?no calentar!). Nuestros departamentos (Eficiencia Energetica, Oficina Tecnica, Electronica e I+D+i) trabajan para dar a nuestros clientes las mejores soluciones. I’ve purchased plenty of the wrong LED bulbs in my search for the ones I like the best.
Yes, CFLs (Compact Fluorescent Lamps) were first on the residential scene, and so they got a lot of attention initially, and they’re still around on store shelves. Standard incandescent light bulbs output light that’s around 2500K in color, which is soft and just slightly yellow. Most homeowners can’t conceptually visualize the difference between 900 lumens and 450 lumens. Normally, you’ll find a rating on the packaging for number of hours the LED is designed to last.
They make the internals for my favorite LED fixture, which is the EcoSmart 6 inch LED downlight, sold at Home Depot and Amazon. It puts out 800 lumens of light, while only using 9.5 watts of energy, and is warranted to last for 10 years. During the day, however, I noticed that the LED bulbs were flickering a bit, albeit very dimly.
I really love the fact that once I install one, I don’t have to go grab a ladder for 10, 20, or maybe even 30+ years. 4200K was always (I am using past tense because it has been 20 years since I was a lighting salesman) the standard (horizontal position oriented socket) metal halide lamp for service station lighting and only around 60 to 65 CRI. Since almost every light in my Utah home is on a dimmer, I had a very tough time switching to LED bulbs initially… until Philips came out with a few of their products. The temperature of lights are vital for kitchens especially when preparing food and complying to personal health and safety measures concerning the handling of utensils, crockery, ovens, hobs and other appliances, so to suggest 2700k is ludacris. I wanted enough light so I am able to fully prepare & cook, and also wash and operate appliances. Halogen light is very eyefriendly and leds make still too industrial or cold light even with 2700k. I just like the updated look of the all-in-one fixtures, which nowdays cost about the same as an LED bulb. Check to see the lumens of those bulbs, then look for something in 3000K or 2700K that has near that many lumens. Like was said here the 5000 would be better for a garage or some where you needed light to see what you are doing.
It is designed to replicate the light source normally provided by Neon or Cold Cathode lighting. Os recordamos tambien que GMD  Solutions ofrece sus servicios para mejorar la iluminacion apostando por la tecnologia LED. Para fuentes de iluminacion, el parametro que define el rendimiento se llama eficacia luminosa.
Es, por ejemplo, 25 veces mas que una bombilla halogeno o 5 veces mas que una bombilla fluorescente compacta (tambien conocida como bombilla de bajo consumo).
Ademas, debido a su alta eficiencia, produce menos emisiones de CO2, dejando una huella de carbono muy inferior a cualquier otra tecnologia. I feel very little satisfaction after doing it, and I often put if off until enough bulbs in a room have burned out that it makes my wife pester me nicely remind me to get it done. We can see everything in between, but how we perceive and interpret light differs based on where it falls within the visible light spectrum.


That 3500K color is overly harsh, but it’s made worse by being near a much softer light. So pick the equivalent wattage for the light output you want, but make a note of the lumens (which will also be on the package).
The EcoSmart 6″ LED fixtures I use throughout our Seattle house are rated for 32 years, based on 3 hours of daily use. I use these small Feit BR30 flood lights in multiple places both inside and outside our houses.
When I replaced the older timer switches with these newer Honeywell EconoSwitches, the problem was solved.  Most current dimmers and motion switches will support newer technology bulbs, and will say so on the package. Since I use dimmers everywhere, I don’t need to run the full wattage except when the extra light output would be helpful.
3500K is a nice neutral white and makes the interior of your house look clean and nice — instead of yellow and dingy.
If you have Lutron dimmers, expect to pay double what you would for insteon in order to get a dimmer compatible with LED products.
4000k LED’s do NOT produce any blue tinge unless you decide to install lights above 5000k of course.
Depending on bathroom design, colour & layout, I would suggest anywhere between 3000k up to 4000k (3500k standard recommendation).
But the halogens run really hot, really love to suck electricity, and burned out way too quickly for me. I’m still not sure if I like it or not, but am thinking that going with all 5000K lights and dimming where needed might make the most sense. This brightly colored tube is designed to emit rich and vibrant feature lighting at night when illuminated, and retain its accent color during the day while switched off. La eficacia luminosa es la relacion entre el flujo luminoso (es la potencia luminosa percibida, exprimido en lumenes) y la potencia de la fuente (en vatios). De esta manera, se evitan los casos que se encuentran frecuentemente de bombillas de bajo consumo encendidas pero ?que iluminan menos que la Luna! Los LED son dispositivos unidireccionales, es decir que solo emiten en una direccion (con un angulo mas o menos grande), mientras los tubos fluorescentes, las bombillas incandescentes y los proyectores de mercurio o sodio son multidireccionales, es decir que emiten en todas las direcciones. The purpose of this blog post is to help you learn from my mistakes, and pick the right LED bulbs the first time. You’re better off buying the proper color to replace all your exterior lights at once, and then spend an afternoon putting them all in. As we move away from traditional bulbs, start trying to think in lumens you want for a fixture, not watts.
I prefer them outside the house, however, because there’s a very slight delay when you hit the switch before they come on. CREE’s standalone replacement bulb is also available in a 2700K 40W equivalent (that only uses 6 watts of power), which is great for accent lighting. Their costs have come down since they first hit the market, and will probably continue to do so as technology improves. And as long as you keep in mind the color temperature when you purchase them, the light can be warm, welcoming, and soothing.
I have been buying CFLs, which is a no-brainer compared to incandescent bulbs, but the am less certain about the cost-benefit analysis vis-a-vis LEDs. But a HUGE part of lighting is CRI and Steve seems to have completely left this out of his discussion. Its evident brighter lights in your bathroom allows you enough to self groom without having to focus too hard due to the lack of lighting. If it doesn’t, then just bite the bullet and buy six more, then sell the original ones on Craigslist. De forma mas simple, es la cantidad de luz emitida por una fuente, y que podamos percibir, por cada vatio de potencia.
Not only will that save you money in the long term, but quality of your marriage will increase as a result of not needing to be nagged lovingly reminded that you need to replace light bulbs. They are dimmable, the color is perfect, and they update the look of any room without being obnoxious. So if you want to save time, money, and maybe some of your sanity, give LED bulbs and fixtures a try.
Though besides the other advantages of LEDs (over CFLS) you cite, you seem to imply that they’re also more economical in the long run than CFLs. CRI stands for Color Rendering Index and really the lowest that should be acceptable for indoor lighting is 80. Or if you bought them at big box home improvement store, will they let you return those bulbs?
Utilizados en iluminacion vial, pueden reducir considerablemente la contaminacion luminica de nuestras ciudades siguiendo el ejemplo de Nueva York. But that’s way too harsh and blue-ish for anything other than a utility room, or maybe a garage. Fluorescent lighting has always had a bad rap because of the old cool white days of very low CRI (around 60) which made everyone look washed out and dead.
If you need more light output, they also make 75W and 100W equivalents (that actually use a fraction of that wattage). For me the 3500k is actually a nice compromise: not so orange that you want to go to sleep during the day, but it is also not blue like the gas station in your photo. Este rendimiento superior permite reducir el consumo electrico al instalar LED en lugar de fluorescentes o incandescentes entre un 30 y un 70%. BTW – I have a hard time believing that the gas station has high quelity leds in 3500 kelvin temperature. There is A LOT to understanding lighting, and there is so much more to it than is on this website.




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