Since these bulbs apparently take several seconds to "warm up", is it dangerous to use them for high beams?
1942879
it's not dangerous but it's just kind of useless if it takes time to warm up, you may no longer need the high beams after that time. I wouldn't use these bulbs for high beams.
1942880
No because it don't affect other usersIt shine like the regular halogen the only difference one is yellow the other is white.also when you start using it you might not used high beam
2118088
The box says no, but I have several in a rather large enclosed outdoor fixture. Heat build up may ultimately shorten the lifespan of the bulb but they have been up and running for 4 - 5 hr per day for about 4 months without a problem. The fact it has been winter has probably helped things.
972503
Ya. I wouldn't get them. They burn out quick! And they don't work well with low load flasher units.
1622824
Hello Patricia. I have an overhead kitchen light fixture that used to eat regular incandescent bulbs in a matter of a few months, then compact fluorescent bulbs also in a matter on a few months. I have two of these LED bulbs and they run much cooler. Be aware that they are not as bright but the glass enclosure does not get hot. I barely even gets warm. My answer is Yes.
2284099
They are not bad. I have had some 13 watts bulbs come on faster.. but it is not like it takes a minute before you see bright light. I do not know on cold weather. I have not tried these outside. I usually leave my outside cfl on 24/7 in cold weather, because they die out more quickly if you turn them off and on all the time in the cold.
2061693
I have used indoor bulbs outdoors. these have a tendency to need to warm up. if you are in a colder climate you may have issues.If warmer and out of the weather I do not think you would have problems
246681
Absolutely OK. They emit close to zero heat. You can grab the bulb with your bare hands even after it has been on and not get burned.
1637156
No warnings, high beams function normally. No flickering as long as you install the provided capacitors.
569439
I'm thinking yes they could. Honestly, though, I think the reason the bulbs are even there is to generate some warmth in the 6 minute drying cycle. It starts with fan only, then the bulbs come on, then there off and its more fan action. Hope that helps.
1229864
yes, low and high beams. BUT, they suck! They will blow out on you in a very short amount of time. I contacted Philips amount my 'defective' bulbs which blew out on me in less than 7 months/10,000 miles. They told me tough luck.
1478921
I would not wire them direct to your high beams! The current draw MAY cause an overload on that circuit, and both could be dimmer than normal(depending on vehicle). It could also cause the circuit to be interupted(fail), again depending on vehicle and age of vehicle. I think wireing the lights independantly, is an easier, safer and more direct method. Some States mandate a seperate switch to control "off highway lights".
2269499
I would say yes, because LED's don't require the warm up time that the CFL's (swirl type) do. Because of the timer, the CFL's may not warm up to be fully lit in colder weather. Keep in mind, I'm not a light bulb specialist, but I'd give it a try. Because the LED's are expensive, keep your receipt for a return! :)
1932821
No, they are Compact Fluorescent Lighbulbs, similar to the ones you have in your home. Those don't get hot at all. They are not incandescent lights.
950264
Yes they will cause hyper flash, an equivalent load resistor will be needed. (installed on a 06 Trailblazer and a 05 RX330)They are bright and a huge improvement over the stock incandescent bulbs.
1058497
Not really. They do give decent light right away, but they get to full brightness over about a minute. Where I use them, it's not a problem, but if it was over my desk it might bother me. (Interesting that I now see two people said yes. We all must have different ideas of "instant on" means.)
1559666
All fluorescent bulbs take time to warm up to reach full brightness, so yes this bulb takes about 3 minutes to warm up. It is a high-quality bulb though and produces very nice white light.
1959471
I used these in my kitchen paddle fan to maximize the light output. The shade is open on top so heat build up wasn't a problem. If you are using them to replace an incandescent bulb they should be fine. All incandescents create more heat then fluorescents so that would represent a heat reduction. If you are using them to replace a smaller fluorescent bulb in a tight enclosed fixture, logically a larger (more watts) creates more heat then a smaller one so its more conceivable that it could create more heat then the fixture could handle. A fixture with a real ceramic socket is more tolerant of higher heat. You might want to buy one bulb and see. I used these in my kitchen paddle fan to maximize the light output. The shade is open on top so heat build up wasn't a problem. If you are using them to replace an incandescent bulb they should be fine. All incandescents create more heat then fluorescents so that would represent a heat reduction. If you are using them to replace a smaller fluorescent bulb in a tight enclosed fixture, logically a larger (more watts) creates more heat then a smaller one so its more conceivable that it could create more heat then the fixture could handle. A fixture with a real ceramic socket is more tolerant... » Read More I used these in my kitchen paddle fan to maximize the light output. The shade is open on top so heat build up wasn't a problem. If you are using them to replace an incandescent bulb they should be fine. All incandescents create more heat then fluorescents so that would represent a heat reduction. If you are using them to replace a smaller fluorescent bulb in a tight enclosed fixture, logically a larger (more watts) creates more heat then a smaller one so its more conceivable that it could create more heat then the fixture could handle. A fixture with a real ceramic socket is more tolerant of higher heat. You might want to buy one bulb and see. « Show Less