questionscan led lights be used in the refrigerator?

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Actually, all of the modern fridges have LED lights in them so there is no inherent problem with it.

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"the one place it really makes sense"???

...because the fridge light is on maybe 10 minutes in total per day in the average fridge of a family of four.

I can't see all that much savings, probably less than $1 per year.

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@kamikazeken: Unless the OP edited his post after you commented, you misquoted him (her?).

You responded to, "the one place it really makes sense" (emphasis mine).

But the OP didn't say THE one place. He said, "I'm thinking the fridge is one place where it really makes sense to put an LED."

Like one of many.

zvwang: As @nortonsark said, LEDs are very common in new refrigerators.

And you're right, it does make sense. Not just because they draw very little power (which @kamikazeken correctly pointed out wouldn't make much difference since they aren't on for very long), but also because:
- They give off very little heat (good when you're paying to keep it cold)
- They have a very long lifespan; they'll likely outlive the refrigerator
- They take up very little space, so the manufacturers can put more of them in without sacrificing space

Are you thinking about retrofitting your fridge with LEDs?

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@kamikazeken:

Actually, it is more than the lower cost to generate the light.

Incandescent bulbs make light by getting (very) hot. After you close the door, the fridge needs to run to remove all that heat. It is difficult to say exactly how much I'm saving as a result of the bulb and how mcuh due to cooler winter temperatures in the kitchen, but since I put an LED bulb in my fridge its yearly cost has dropped by ~$30 (I have the fridge on a wireless Kill-A-Watt sensor). Since the LED bulb cost me $10, this sounds liek a good savings.

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I've been using an LED bulb in my fridge for about six months and it works fine. (It does take a full second or two to come on after the door is opened, but it works perfectly well.)

Unforunately, I cannot find an LEB bulb small enough to replace the bulb in the freezer, where it would save even more money.

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I'm just not seeing fridge doors open long enough for the bulb to get hot enough to be a real factor in heating up the interior of the fridge.

I do see the advantage in newer fridges having banks of LEDs spread throughout, it makes for better overall lighting, since they're so small they can place dozens of them in the same amount of space as a single typical incandescent.

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My fridge right now uses a standard 40W bulb, so I was just going to put in a standard replacement bulb. I didn't know if led bulbs needed to be designed for cold temperatures or what.

Considering that the bulb will probably outlast the fridge, I'd be perfectly happy with saving $1/year over the lifetime of the fridge. But like others have pointed out, it's the other reasons that made this a good fit:
- You basically never have change it
- There's no longer a very hot thingy inside your fridge
- Having it inside the fridge effectively negates complaints about aesthetics/light quality

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@baqui63: I'd like to debunk that myth. LED systems do get very hot. Notice that most E27 socket LED bulbs have heat sinks to help dissipate the heat through airflow.

My LED flashlight generates 1200 Lux and is designed to be held in your hand so your body can absorb the heat. If you leave it on without holding it, you may burn out the circuit.

The confusion regarding the heat may be that the LED itself may not generate much heat but the converter / adapter or the processor does. You cannot just plug an LED directly into a 110/120 socket. They require conversion to the voltage and amperage required by the LED (and DC versus AC) and that circuit is not as efficient as the LED itself so the excess energy is turned into lots of heat.

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Late to the party but here goes:

Yeah, LEDs like cool environments, and LED replacements are available for your fridge. Many newer refrigerators come with LEDs.

A light bulb can't produce more heat than its total watt usage. A forty watt incandescent will produce @40 watts of heat (the light is part of the same spectrum; it's all energy), and an LED using 6 watts total can't produce more than 6 watts of heat.