LEDs will Give you Brain Freeze.
First LED really are a good thing, a great thing. If I were to have put in incandescent light bulbs in the house (over 60 bulbs) I would have over 4,000 watts in light bulbs. But with LEDs I have less than 400 watts of light bulbs. For you electronic guys P = I X E or to get current I = P/E That’s 33.3 Amps vs 3.3 Amps of current to run the lights. A 90% reduction in El usage.
That’s the first part of the Brain Freeze. You can send your kid out to replace an incandescent bulb. “Hay Kid go get me a 60W bulb”. Done. So you think you just have to buy a LED that is listed as a 60W equitant. Not really. Just go to Lowe’s or Home Depot light row and take a look, Brain Freeze.
LED’s have many options:
First the old friendly Watts, but there isn’t really a direct match even though the manufactures puts on the label some numbers. Most 60W replacements are around 8Ws but I’ve gotten equivalent light (lumens) out of 4.5W LEDs.
Second: Lumens, which is a measurement of the amount of light a bulb puts out. But I haven’t found that a 60W putting out 800 lumens. A 6-8W LED puts out about 800 lumens but I find them brighter than incandescent. In a fixture that I’d put two 40W bulbs I only pit one LED equivalent. A 4.5W LED.
Third is the color: or kelvin (K). The K measurement of an LED is between 2500K to 6500K. This is a pure personal choice. 5,000K is considered “Daylight”, the sun at high noon. But I find this light way to bright indoors. An incandescent bulb is around 2,800 and a florescent bulb around 4,500K .
Fourth is projection: Yea Projection options. That is how the LED transmits it light. An incandescent projects its light evenly around the bulb, but with LEDs there are many different ways a bulb will projection the light.
Fifth the some LED shouldn’t be in contained covers. It’s written on the box. I have heard they may burn out fasted or my (mini) explode.
Sixth is a replaceable bulb or fixed. Some fixtures have non replaceable bulbs. At first thought with a 20-25 year projected life who cares. But if you have 4 like fixtures and in five plus years one goes out can you get parts or will you have to replace all 4 fixtures to keep them matching. Also with a replaceable bulb in 5 years a 6w bulb might be replaced with a 0.5W. If you bulbs are replaceable you can easy upgrade.
Socket: I never had thought about the size of a bulbs socked. Edison 27 or T10 or ???????
The watt comparison is really of little help, but I’ve found a 60W equivalent LED produces more light that a 60W incandescent bulb. I don’t care want the Lumens are. I’d say about (unscientific) 20% more light. Example the second floor hall lights. Two bulbs in each fixture, I would had put two 40W incandescent bulbs, but with 2 40W equivalent it was way too much light, so I cut down to one bulb in each fixture.
Color is personal. We have 10 high hat fixtures in the kitchen, so I went to Lowe’s and bought 6 different bulbs and put them in the high hats and had an onsite test. We like 2,700K bulbs, 3,000K are OK, but nothing higher. A couple of the closets have higher, the electrician installed them, I can tolerate them in a closet. I think the 2,700K just has a nice warm effect. Now for a shop light a 4,500K or higher, the light is bluer but I think it better for working with.
Projection just depends on the fixture, and what kind of effect you want.
Fixed vs replaceable. We went with 95% replaceable for the reasons I point out above. It one set of fixtures I wanted a certain effect and could only find it in a fixed bulb fixture
Prices are dropping like crazy. I bought a big bunch on 40W Philips equivalent from Lowe’s on sale for under a dollar.
As for lasting 20 to 25 years w can only wait. I had one Halogen type replacement o the range hood go bad in 3 weeks. But the others are all working.