Windshield fogging up in cold weather

[GarageMahal]

Interesting idea. This stuff works great for keeping ski goggles from fogging up in the worst conditions

struggled with the windows last night when I had a truckload of people I’m gonna put some of this on my windshield tonight. Will update

Wow! Havent seen that stuff in 40 years but I recall that worked great on my ski goggles back then.

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[Eastbaylightning]

Hey, all. Different take entirely here, but....I seem to have this problem much more when the windows are dirty. It started up a couple weeks ago, so I repeated what I did last year - mix a gallon of water with a tablespoon or so of white vinegar, and a drop of dish soap. Use a chamois, dipped in this solution, to scrub each window, then reverse the chamois to finish up.

When I do this, the glass is so clean that it almost CAN'T fog up. It takes a lot of hot air to make it fog at all. And, you have really clean windows.

My theory, being a computer engineer, not a weather guy, is that really clean glass has less contamination to allow the moisture to condense and fog up the glass. Sounds good, but who knows?

I'm gonna give this a try this weekend. Thanks.

 

[CavRider]

Hey, all. Different take entirely here, but....I seem to have this problem much more when the windows are dirty. It started up a couple weeks ago, so I repeated what I did last year - mix a gallon of water with a tablespoon or so of white vinegar, and a drop of dish soap. Use a chamois, dipped in this solution, to scrub each window, then reverse the chamois to finish up.

When I do this, the glass is so clean that it almost CAN'T fog up. It takes a lot of hot air to make it fog at all. And, you have really clean windows.

My theory, being a computer engineer, not a weather guy, is that really clean glass has less contamination to allow the moisture to condense and fog up the glass. Sounds good, but who knows?

This is just standard practice and it will certainly help but why so stingy with the vinegar? Half and half baby just like an Arnie Palmer. One tbsp/gal of the dishwashing detergent is OTM though.

 

[Lightning Rod]

Hey, all. Different take entirely here, but....I seem to have this problem much more when the windows are dirty. It started up a couple weeks ago, so I repeated what I did last year - mix a gallon of water with a tablespoon or so of white vinegar, and a drop of dish soap. Use a chamois, dipped in this solution, to scrub each window, then reverse the chamois to finish up.

When I do this, the glass is so clean that it almost CAN'T fog up. It takes a lot of hot air to make it fog at all. And, you have really clean windows.

My theory, being a computer engineer, not a weather guy, is that really clean glass has less contamination to allow the moisture to condense and fog up the glass. Sounds good, but who knows?

I'm kinda an OCD guy and my windows are ALWAYS squeaky clean. I don't use vinegar, but i do use Invisible Glass on interior windows, a couple times a week. I'm not sure if it's the vinegar that helps... but as far as clean windows, mine are always immaculate.

Clean windows is not the cure because my problem is ongoing.

 

[ctuan13]

I'm kinda an OCD guy and my windows are ALWAYS squeaky clean. I don't use vinegar, but i do use Invisible Glass on interior windows, a couple times a week. I'm not sure if it's the vinegar that helps... but as far as clean windows, mine are always immaculate.

Clean windows is not the cure because my problem is ongoing.

Same. I am a former professional detailer and my glass is always very clean. This problem still occurred. And it hadn't occurred before. I'm hoping with the 12V reset it stays solved, but we'll see.

 

[Lightning Rod]

I just thought about this...

I said that I didn't have this fogging issue last winter, but I just realized I didn't have ceramic tint film on my windows last winter either. I have 35% ceramic film on the side windows and I have 80% ceramic on the windshield and moonroof. Does anyone have tint film on the windows?

 

[CyclopsThere]

you mentioned a smell, ive had a heater coil crack before and blow vaporized coolant into the cabin which caused perma fog, but it definitely smelled like burnt sugar and the fog had a bluish tint

 

[ctuan13]

you mentioned a smell, ive had a heater coil crack before and blow vaporized coolant into the cabin which caused perma fog, but it definitely smelled like burnt sugar and the fog had a bluish tint

No, it wasn't coolant, I'm quite familiar with what antifreeze smells like. It was the subtle smell you get when the compressor in an AC system kicks off and the evaporator begins to warm back up. But yes the fog wasn't permanent, just persistent since the humidity wasn't dropping. Once it dried out again in the truck the fog disappeared.

 

[TMND]

So I just found a simple little trick to deal with fog/frost on the windshield without having to turn max defrost on. Folding down both sunvisors traps just enough air that its pretty effective at clearing it. Slight inconvenience being 6’1 but worth keeping that fan from blasting

 

[Lightning Rod]

I set climate from Auto, turned fan on 4 and switched to windshield and floor last weekend and it seems to help my situation in the cold weather fogging up my windows. We'll see how it goes this weekend.

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