Rated 4.1 out of 5 by 16
Rated 4.0 out of 5.0 by Jason31 Great bulb, perfect match to Florescent color and brightness
These LED bulbs come on instantly at full brightness. No more buzzing or flickering. They work well at cold garage temperatures. The color and light intensity is a perfect match for a 4100k 40w florescent bulb. The bulb consists of two rows of LEDs spaces about 1/2" apart, it is not possible to distinguish the individual LEDs when the bulb is on, making it appear the same as a florescent bulb.
To use these bulbs, the existing fixture needs to be rewired. Just cut out the ballast and wire directly to the sockets according to the wiring diagram. This is not hard to do with a few wire nuts and some spare 14 gauge wire. If possible remove the fixture from the ceiling and work at ground level.
Now for the cost analysis. The cost per bulb is about $50. This is very high. A 40w florescent tube is about $4. The energy savings is high, about 50%, but at 10 times the cost. Electricity for tier 3 in California is about $0.25 per kilowatt-hour. If the bulb is on for 4 hours per day 365 days per year the savings is only $7 per year. This is too long of a payout and you will have to justify these bulbs on their other attributes like instant on at full brightness. In my garage I have 6 more florescent tubes to replace and it's difficult to spend $300 just to have lights that don't flicker for the first few seconds.
As the first product of its kind, these bulbs are great. As the price for LED's come down, this is the way to go.
December 31, 2013
Rated 3.0 out of 5.0 by AJAY Led Bulb for Fluorescent Retrofit
Phillips continues to be on the cutting edge in the lighting industries push towards LED. They are just coming out with a true "replacement LED" called INSTANTFIT. The INSTANTFIT LED Bulb uses the existing ballast in your fixture and requires no rewiring. This bulb that I am reviewing is NOT the INSTANTFIT model and requires rewiring the fixture. (Because the LED bulb has its' own ballast). My fixture was newer and did not have the older "tombstones" on each end that accepted two wires each. Therefore my wiring retrofit was quite challenging and not worth the 26 watts that I saved versus using the fluorescent. I would not recommend this bulb only because I think it would be well worth waiting until the stores carry the INSTANTFIT model, Unless you or a family member is an electrician.
February 12, 2014
Rated 4.0 out of 5.0 by Mikkel1955 Not a drop-in replacement.
For me, these lamps were a good choice. I have a detached garage, and it tends to get a bit cold in the winter. That is not a problem for these lamps. They light right up when it is below zero.
The only disadvantage to these lamps is that you can not just remove the old lamps and put these in. You have to rewire the fixture, disconnecting or removing the ballast, and wiring the lamps with a line voltage feed. If you have a fixture that needs the ballast replaced, it is an ideal candidate for conversion to these lamps. Not needing to buy the ballast helps defray the initial cost of the lamps, and the savings in electricity more then cover the rest of the cost.
If you are comfortable rewiring a fixture, or have someone that can rewire it for you, this is the way to go!
January 11, 2014
Rated 5.0 out of 5.0 by jtrev Better than expected
I ordered only two of these and wish I had ordered 4. These lights are bright and compare well to T8 bulbs that are rated at 37 watts. I had two Philips 37 watt bulbs and now I have two Philips LED T8 Bulbs that give off a little bit more light and use only 38 watts as apposed to 74 watts. Nice investment. By the way use a multi meter to make sure you wired the positive and negative properly before installing. The whole installation took me 20 minutes with wire cutters, screwdriver and a ladder.
September 4, 2013
Rated 2.0 out of 5.0 by JustaSimpleGuy A lot of hype to sort through for a lot of money
The instant on - no flicker or buzz is great, as is the cold operation versus fluorescent.
Downside is that the efficiency of this is 86Lumen/watt.
The WORST Fluorescent that is legal for sale in the USA is 89 Lumens/watt!!
The supposed Energy savings is because the lamps are only 1/2 as bright as T8.
I get T8 product at 3100 lumens,
These generate only 1650.
If that is the way to save energy just leave 1/2 your lights off and get the same result
January 10, 2014
Rated 5.0 out of 5.0 by Ken Very bright, even light..
Both of the ballasts in my fixture were burned out and it was time to change to these bulbs. I didn't see why a meter would be necessary to check polarity on the AC line as mentioned by another reviewer. Perhaps he was using the LED ballasts, which I did not. Not sure why they would even be needed. Packaging was very good, if not overdone and shipping was prompt. Good product and service.
September 23, 2013
Rated 3.0 out of 5.0 by PEANUT PRETTY DISAPPOINTED
The Philips T8 LED linear light bulbs look like a good way to save electricity when read description. When received bulbs and read instructions, I found out that the ballast in light fixture/shop light has to be modified for LED light bulbs to work, and then you can not go back to using fluorescent bulbs. One of he bulbs shipped to me was damaged when I took it out of box.
December 24, 2013
Rated 2.0 out of 5.0 by Butch Product is OK
Provides less light than LED T-12 tubes.
Re-wiring required is more difficult than competitive products.
Installation instructions are good, but you must call online customer service to get the instructions instead of providing them with the product or making them available to the customer online.
January 29, 2014