Feit LED Utility Shop Light 73991
 

Costco has an LED lamp available for $20 in the warehouse only, not online. I believe it is this one, though the item number in their brochure (689518) does not match. There is not a lot of information on the manufacturer's Web site. Is there any way of telling whether this might be useful for growing orchids?

3700 Lumen 4000K Dual 4ft LED Utility Light

Item Number: 73991
3700 Lumen 4000K Dual 4ft LED Utility Light
This fully assembled, dual 4ft LED utility light requires no lamps to replace and lasts up to 50,000 hours. Perfect for hanging or flush mount installation.
Instant Full Brightness
No Humming
No Lamps to replace
Ultra Light Weight Design
Includes 5ft plug-in cord and a 6 inch hanging wire harness
Energy Star®

Volts: 120V
Equivalent: 38
Estimated Yearly Energy Cost: 4.58
Color Temperature: 4000
Life Year: 45.7
Life: 45.7 years / 50,000 hours
MOL: 48" Long
Life Hours: 50,000
Color: Frost
Energy Used: 38 Watts
Lumens: 3700
Usage: General Purpose & Task Lighting

4000K is supposed to be the brighter, bluer end of "bright white."

I imagine that it's similar to the Acintic White/Blue LEDs that are used in aquaria for corals and marine plants; I have a pair of them on one of my cases and the plants that are in them (Cattleya seedlings and mini-Catts) are all growing/flowering well. I'd say try one out; for $20, the worst case scenario is you have a new low draw work light...

97 lumen/W, so it isn't the efficient one, but for the price, it is a decent deal, estacion. It is just a bit more expensive than cheap T8 fluorescent shop light. But efficacy of T8 is 90 lumen/W. So it is better deal than T8 for sure. The realized light output is probably similar to 2 bulb T8 (since LED is directional) even though the spec of T8 x 2 would be higher (about 5000 lumen).

Looks like a decent option for supplemental lighting, and easy to use with tidy appearance. In terms of area covered and light intensity and quality it might be somewhat limited as a sole light source.

One concern - does the light quality and intensity diminish during the rated 50,000 hour life?

One downside - when it goes you replace the whole unit not just bulbs. Perhaps not the most environmentally friendly choice, and would it matter if you weren't able to find an equivalent replacement?

50,000 hours ÷ 12 hours / day = 4,167 days.

4,167 ÷ 365 days / year = 11.4 years.

Technology will have changed so much by then that lamps we use now probably won't be available and fixtures may be obsolete.

I think I just might.



---------- Post added at 11:27 AM ---------- Previous post was at 11:27 AM ----------


Thats seems pleasant to live with

If you have a decent city/county recycling system, i would not worry about disposal not being enviroentally friendly. Nearly all of a shop light should be recyclable.

Thanks for the research. It's not sincerely ugly and it's not red and blue. It would hang above that window/ plant stand. Btw, room wasn't finished then, added fireplace to right to keep I intermediate temps.