Rich H.
Well-known member
Anyone use these? What did you think? Any good?
http://www.amazon.com/dp/B004QP2L7K/?tag=atomicindus08-20
http://www.amazon.com/dp/B004QP2L7K/?tag=atomicindus08-20
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LED tubes?
- Thread starter Rich H.
- Start date
ForceFed70
Well-known member
You would need to re-wire your fixture to remove the ballast. Not a big deal tho.
Let's do some math. These tubes cost approx $40 more than a regular T8 and produce slightly less light. For simplicity sake, let's say they produce the same amount of light but use 16watts less power.
Typical cost of electricity is 10 cents per killowatt hour.
$40 is therefor equivilent to 400 killowatt hours of electricity.
With 16 watts of power savings, it would take 62.5hrs of runtime to save 1 killowatt hour or 25,000hrs of runtime to save 400 killowatt hours
25,000hrs of runtime = 1041 days = 2.85 years of constant runtime. Assuming you average 8hrs a day with your lights on it would take 8.5years for the energy savings to pay for the additional cost of the lamp.
Nevermind the advertised life expectancy of 30,000hrs.
Let's do some math. These tubes cost approx $40 more than a regular T8 and produce slightly less light. For simplicity sake, let's say they produce the same amount of light but use 16watts less power.
Typical cost of electricity is 10 cents per killowatt hour.
$40 is therefor equivilent to 400 killowatt hours of electricity.
With 16 watts of power savings, it would take 62.5hrs of runtime to save 1 killowatt hour or 25,000hrs of runtime to save 400 killowatt hours
25,000hrs of runtime = 1041 days = 2.85 years of constant runtime. Assuming you average 8hrs a day with your lights on it would take 8.5years for the energy savings to pay for the additional cost of the lamp.
Nevermind the advertised life expectancy of 30,000hrs.
ForceFed70
Well-known member
lol, now that you put it that way. My lights stay one 6 hours max, on the weekend, and 2 - 3 hours every other day, if I'm home. So it would essentially take me 6 - 8 years to recoup the cost. Yea, no.
More like 20 years based on your usage.
Last edited:
ddawg16
Well-known member
You would need to re-wire your fixture to remove the ballast. Not a big deal tho.
Let's do some math. These tubes cost approx $40 more than a regular T8 and produce slightly less light. For simplicity sake, let's say they produce the same amount of light but use 16watts less power.
Typical cost of electricity is 10 cents per killowatt hour.
$40 is therefor equivilent to 400 killowatt hours of electricity.
With 16 watts of power savings, it would take 62.5hrs of runtime to save 1 killowatt hour or 25,000hrs of runtime to save 400 killowatt hours
25,000hrs of runtime = 1041 days = 2.85 years of constant runtime. Assuming you average 8hrs a day with your lights on it would take 8.5years for the energy savings to pay for the additional cost of the lamp.
Nevermind the advertised life expectancy of 30,000hrs.
For once....someone who knows how to do the math.....
Anything with a payback over 2 years is usually not a good deal.
Also consider the fact that in about 8 years, lighting technology will most likely be at a new level....and those lights will be obsolete....
rsanter
Well-known member
they are decent but overpriced
you would have to have those lights in nearly constant use to justify them at all
alos one of the best places to use them is in a cold box. they will have max life and add little heat to to cold box
bob
you would have to have those lights in nearly constant use to justify them at all
alos one of the best places to use them is in a cold box. they will have max life and add little heat to to cold box
bob
I don't like the price much either....
If the price came down a little, then they might be good to retrofit old T12 fixtures with...no ballast swap needed, just gut them, rewire for LED, done.
But, with prices being what they are.....meh.
Guess all I can do is wait and see what happens.
If the price came down a little, then they might be good to retrofit old T12 fixtures with...no ballast swap needed, just gut them, rewire for LED, done.
But, with prices being what they are.....meh.
Guess all I can do is wait and see what happens.
Charles (in GA)
Well-known member
Florescent lights, T8 and T5 are here to stay for quite a while. LED's are still evolving and the ones you are looking at will probably be obsolete and Ir-replaceable when the time comes, and second, I seriously doubt the life numbers the manufacturers spout for the LED's.
Charles
Charles
gatchel
Well-known member
For once....someone who knows how to do the math.....
Anything with a payback over 2 years is usually not a good deal.
Also consider the fact that in about 8 years, lighting technology will most likely be at a new level....and those lights will be obsolete....
I agree. I have also done the math and LED fixtures aren't yet a good choice for a garage.
6768rogues
Banned
When I worked as a facility director for a large school district, a vendor pitched LED tubes for replacements for T-8s. I noticed (other than the China label) that they had no laboratory testing (UL, CSA, FM, etc.). I contacted the Dept. of State and there are standards for bulbs but no requirement for the bulbs to meet the standards. Fixtures and wiring have to meet the standards, but not bulbs. The Dept. of State agreed with my opinion that I would be sticking my neck out by using unlisted electrical bulbs in a public school. I did not buy any but a friend in a similar position in a neighboring school district did buy some. He still works there, so I guess his school did not burn down.