I have had a pair of Trucklite Phase 7 headlights for about a year now, and when I bought them I specifically asked about their performance in snow. I had heard about other LED lights allowing the build up of snow on their lenses due to the lack of heat they put out while operating — the consenses was that it wouldn't be a problem. Well, it is.
I think it's a combination of their relatively flat lens with the lack of heat output (which is light energy lost, I know: inefficient), but I got to test this out during some wet snow the past two "storms" we've had in MD, including today, and it's definitely something worth noting. Dry, champange powder like out west? Not a problem, as it'll just sluff off the light's cold surface. But wet, buildable snow WILL accumulate on the lens surface, defracting light that's very evident at night with the spread of light aimed upwards with no cutoff whatsoever. I was even catching glimpses of faces of the drivers of oncoming traffic ... I'm sure they didn't appreciate it.
Some older LED designs incorporated a heat fan to circulate some of the heat from the LED heatsinks to the lens do remedy this ... for right now, I'm stuck cleaning of the lenses every 10 minutes of driving, or so.
Food for thought. I will say that I'm 100% satisfied with them in all other aspects a light can be judged on, but driving in east coast snow (wet) is not one of them.
2012 Crush JK Rubicon on 2.5" and 37s
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