Q: Have you found any led t8 lamps that are good replacements for fluorescent T8 lamps? If not, do you see them ever becoming a viable substitute for the fluorescent version?
A: According to Dr. Curran, the quality of LED T8 replacements isn't the problem. There are good quality lamps out there, and there's also junk (like just about every other light and light fixture around). The issue of LED T8s is more complicated. Dr. Curran explained it in 3 parts:
1. Cost. LED T8 lamps are still expensive. $50-$60 compared to $1-$2 for a fluorescent T8 that already can last up to 40,000 hours. It's hard to see a reasonable rate of return on that.
2. Light Output. LED T8s tend to "dim" in comparison to fluorescents here. Very few LED replacements have a light output over 2,500 lumens, while fluorescents average from 2,800-3,200 lumens.
3. Fixture Performance. Since LED T8s are a more directional light source (they don't have light shining 360 degrees around like a fluorescent T8) no light bounces off the fixture to illuminate the walls. This can cause a dismal "cave effect" in the room.
So in general, it's safe to say the LED T8 replacement's time has not yet come. However, right now there are a few exceptions where they do come in handy: 1. In freezer/refrigerated cases at grocery stores. LEDs love the cold and don't radiate heat as much as fluorescent lights do. This will save on HVAC requirements and increase the shelf life of produce.
2. For places where the cost to replace lamps is high. If you have a chemical plant, factory, or any other kind of business that has to shut down sections for maintenance, the t8 led lighting life could be worth it.
3. In areas with sensitive subjects. One example of this would be in a hospital that requires all lights to have no mercury. LEDs pass this test. Fluorescents don't.
www.ervan.cn is a professional LED tube manufacturer located in Shenzhen, which supplies products like led t8 tubes, t10 led light, and so on. It has a great production group to ensure our production capability, 150 people on the production line to make sure 50,000pcs of tubes output every month.
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