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Old 03-18-2011, 02:27 PM   #1 (permalink)
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LED's in the home, most Lumins Per Watt?

I've been looking at getting more LED's for my house but I'm having trouble finding ones that have a high output per watt, so far this one for $60 looks to be the best but it's only sold as a flood light and is $60 but the plus side of it is that it's 83 to 92 lumins per watt, compared to a CFL that is often 50-60 lumins per watt, but some of the LED's out there are as low as being in the 15-30 lumins per watt range.
I spent a while yesterday searching for a Feit brand LED that I have that is 1.1 watts and puts out around 74 lumins, plenty light for reading by, for use in the fridge and as a night light that gets left on so you are not entering a dark house, and draws less then your clock radio, but I can't find it for sale any where any more!
So does anyone have any LED's that they like that are over 60 lumins per watt that they can share a link to?

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Old 03-19-2011, 04:20 PM   #2 (permalink)
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60 lumens per watt is hard to find; make sure you're considering bulb longevity and warranty because those bulbs are pricey upfront.

I'm a fan of the C.Crane GeoBulb, and the lighting products from EarthLED.

Both C.Crane and EarthLED have given me great service. Go for the bulbs with the SuperBright LEDs, not the ones with multiple panels of lights. I've found the latter to prematurely fail more often than the former.
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Old 03-19-2011, 04:39 PM   #3 (permalink)
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Ebay has much better prices than what you're looking at.

Also consider the cost per watt though, and/or cost per lumen.
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Old 03-19-2011, 05:01 PM   #4 (permalink)
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Quote:
Originally Posted by johnlvs2run View Post
Ebay has much better prices than what you're looking at.

Also consider the cost per watt though, and/or cost per lumen.
I'll buy a higher cost LED if it's more efficient then a CFL because it will come on quicker and last many times longer but it has to use less energy per lumin for me to be willing to pay extra for it.
So you say Ebay has some that are good, are there any that anyone has found on Ebay that they are willing to link to?
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Old 03-19-2011, 05:11 PM   #5 (permalink)
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I use 2 watt LEDs and 13 watt CFLs.

How many watts are you looking for in a bulb?

The Ebay search is easy to use but if you post what you're looking for then I'll take a look.
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Old 03-19-2011, 07:51 PM   #6 (permalink)
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Quote:
Originally Posted by johnlvs2run View Post
I use 2 watt LEDs and 13 watt CFLs.

How many watts are you looking for in a bulb?
I'm looking for both some small 1 to 3 watt LED's that are over 70 lumins per watt or even greater if they are out there, the 1.1 watt 78 lumin Feit LED that I have I paid $12 for and I can't find them any where any more, it is also yellow enough that my room mate who is picky about color temp doesn't find it too blue.

I'd also like to find something like the 9 watt 830 lumin LED that I first linked to, $60 is a bit pricey but just low enough to be tempting, I don't need it to be a PAR38 bulb but the fact that it's a flood bulb and not a spot bulb would give me more options for use.
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Old 03-19-2011, 08:45 PM   #7 (permalink)
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60 LED 3W E27 White LED 110V 12000mcd $4.18

108 LED E27 3.8W White Corn Shape Light Bulb 110V-220V 5500K $5.29

White 60 LED 5 Watts Screw Base Light Bulbs E27 $9.49

Lot 2 E27 LED Spot Light Bulb 360Lm 6000K 3W $12.98

Quote:
LEDs with a high luminous intensity typically have a narrow apex angle. Similarly, LEDs with a wide apex angle typically have a relatively low luminous intensity. The cause for this relation is ... LEDs of a specific class (for example, "high flux") all produce roughly the same amount of luminous energy. However, when a LED emits its total energy in a narrow angle, the intensity will be greater (in the direction of that angle) than when the same energy had been emitted over a wide angle.
candela (millicandela) to lumen conversion wizard

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