Review by J. Pawlowski:

At a little over 10 bucks for 8 of these, you can’t go wrong.

These are just your basic CFLs, at the 2700 kelvin temperature range. That means they’re about the same shade as your basic ordinary 60W incandescent bulb. A pale yellow white, not pure white (5100 Kelvin), or daylight (around 6300 Kelvin).

Pure white or daylight CFLS cost more because the phosphors in them are more expensive, but they do have the advantage of being more natural light, rather than imitating the poor quality light of an ordinary light bulb.

So if you’re thinking of upgrading to CFLs these bulbs are a great deal to start from. But do take advantage of the technology & get a higher quality light at a higher color temperature for some of your areas, & enjoy better quality light, rather than just using CFLs that imitate the poor quality light of old fashioned light bulbs.

Winter depression can be triggered by lack of natural light because of less hours of daylight, & more cloudy, overcast days in winters. In northern climates when it’s cold, people stay inside more, use heavy insulating window curtains, further reducing their exposure to natural light. 5100K-6700k CFLs help with winter depression by exposing you to more natural light. Colors look more rich & vivid. Things look more cheery. It’s even easier to read under natural light.

I find I can read just as easy under a 4-watt 5100k CFL than a 13 watt 2700k CFL.

The backlight in your LCD display that you’re probably reading this from is probably a 5100k-6700K bulb.

Look at the white areas on the screen & then look at your lighting in the room. Doesn’t that ordinary light bulb or 2700K CFL look a lot more yellow by comparison?

Review by George B.:

Things to look on the package:

1. Kelvin temperature (K): The only accurate measurement for the kind of light or “color” of light you’ll get. 2700K is pretty close to the “warm” incandescent we are all used to, 4100/4200K is known as “Cool White” (you might look “ghostly under that) and 5,000+ is the daylight/sunlight. If the lamps do not have the K designation, do not buy them – they are the cheaper variety since establishing the K temp. costs more.

2. Lamp Life (Hrs): The life of a light bulb is the MEAN life, that is at the stated hours HALF of them will be dead and HALF of them will still be working. Life can be affected by many factors, one being how many times a day you turn them on and how long they stay on. As a rule, the more on/off’s, the less they last.

3. Initial lumens: If it is not listed try another brand. For the typical 60W equivalent it ranges between 700 and 900 lumens. Try for 800+ In general the highest the K temp. (see #1 above) the higher the lumens.

4. Make sure you read what they say about DIMMERS, as well as photocells, timers, etc. Avoid costly surprises.

5. Make sure they are rated for outdoor use – if that’s where you want to install them. The environment’s temperature has a lot to do with the CFL performance.

6. Buy as few as you can first and redo, say one room. See how YOU like it (allow 90 seconds warm-up time). If you are a male, have your female with you…she might have some objections you can’t even think about!

HAPPY HUNTING!

Review by serenity-now:

Just want folks to be aware that these measure approximately 6.5″ in length, or about an inch longer than a typical-sized incandescent bulb (like 60 or 100 W variety). I was interested in getting one of these to replace the 50/100/150 W incandescent bulb in my living room lamp (the tall, free-standing kind), but found it to be too long as it comes out of the top by about an inch. For now I am waiting for a company to come out with a CFL 50/100/150 equivalent that matches up in size better.

Review by L. Mountford:

If you’re looking to move to more environmentally-friendly lighting, these are for you. These 3-way spiral fluorescent bulbs are wonderful. I haven’t had mine long enough to address the extended lifespan. But they serve beautifully as a replacement for standard 3-way 50-100-150W incandescent bulbs.

The “color” of the light is very warm — not at all like the greenish-bluish tone one usually associates with fluorescent light. It does take a few seconds for the full intensity of the light to develop at the 29W (150W-equivalent) level, so keep that in mind. It comes on fairly dim, then develops the bright light you expect in about 15 seconds or so.

I’m currently in grad school (an older “non-traditional” student), and I do a LOT of reading. I’d been going through standard 3-way bulbs about one every 3 months or so, so I was looking for a more economical solution. The claim for “7 year life” is based on 4 hours per day of use. I know I use mine a lot more than that (more like 18 hrs or so), so I don’t expect 7 years. But if they last more than about 24 months, they’ll pay for themselves.

Also, my local discount hardware store charges .99 apiece for the exact same bulb, so Amazon’s price is a good deal.

UPDATE: It’s now March 19, 2010, and I’m still using the SAME 3-way CFLs I wrote about above. One of them is in my living room, where it’s in use on the highest setting from around 9:00am until around midnight nearly every day; another one is in the bedroom where it’s on from around 5:00pm until around midnight. That’s right — these are the same bulbs I purchased in January 2008, and they’re still going strong. They’ve MORE than paid for themselves. Maybe I lucked out or something (I’ve read some of the other reviews from folks who’ve had problems) — but I’m definitely planning to continue using these, and will be replacing ALL light bulbs in my home with CFLs as the incandescent ones burn out.

Review by mr00us:

I would strongly recommend NOT buying sylvania bulbs. I bought 12 of these bulbs along with similar energy saving walmart brand great value bulbs. I really did think that I Sylvania bulbs would be better as they said that they had some 8000 or 10000 hours of life. Well, withing 4 months 8 out of 12 I bought went bad. Since I buy these energy saving bulbs, it may be understood that I am big on saving energy, both to save my energy costs and cut some global warming. One went bad today and I decided to write a review so that people would read the review and may decide to save their money by NOT buying this brand.

I do not love Walmart, but I am forced to say that their bulbs are still working unlike Sylvania for which I paid more that Great value.

Review by J. Wesley:

I purchased about 3 dozen of these bulbs for my home. I decided to make the switch to CFL to lower energy costs and also reduce heat output in the home. Initially these seem to work quite well. However, 5 months later about 75% of them have quit working. It is unfortunate for me that I spent so much money on a product that does not live up to it’s claim.

I wouldn’t purchase this product again. I am going to be more careful and read reviews prior to purchasing again. I do intend to contact Sylvania to see if I can get any money back.

Best regards.