Windshield and others windows fogging problem

[look30]

I have a HUGE problem with fogging of the windows, it is cold here in Canada, and freezing forming a thick layer inside.
Takes us about 10 minutes to clear up the fog every time we leave the car for more than on hour.
Any idea ?

[minibus4]

Buy a big thing of Silica packets like the ones you find in your shoes and say "DONT EAT" and place them buy your windsheild and other wet places. You can buy big versions of them at a craft store or a sporting good store that sells them as gun safe humidity reducers. Ultimately, the best thing you can do is to roll down your windows every night you park your car in the garage, if you have one. If its getting really bad then you can run a dehumidifier in it over the course of a a few days and have the ac cord coming out of the door or window. I would advise against buying products such the Rainex "defogging window solution" as it does not really work. When you run your car, do you leave the defogger on constantly? The defogger takes in cabin air and runs it through the ac to get rid of moisture, if you run the regular heat all the time then it wont really get the moisture out of the cabin. Look out for things such as your mats to see if they are constantly wet and clap your feet outside of the car before your feet touch the mat.
Fell around your car to see if you can find any wet areas and go from there.

[ImStricken06]

use the windshield option and you will be fine. this is a problem when people dont use the A/C and recycle the air inside the car - while pointed at the occupants.

[ImStricken06]

Buy a big thing of Silica packets like the ones you find in your shoes and say "DONT EAT" and place them buy your windsheild and other wet places. You can buy big versions of them at a craft store or a sporting good store that sells them as gun safe humidity reducers. Ultimately, the best thing you can do is to roll down your windows every night you park your car in the garage, if you have one. If its getting really bad then you can run a dehumidifier in it over the course of a a few days and have the ac cord coming out of the door or window. I would advise against buying products such the Rainex "defogging window solution" as it does not really work. When you run your car, do you leave the defogger on constantly? The defogger takes in cabin air and runs it through the ac to get rid of moisture, if you run the regular heat all the time then it wont really get the moisture out of the cabin. Look out for things such as your mats to see if they are constantly wet and clap your feet outside of the car before your feet touch the mat.
Fell around your car to see if you can find any wet areas and go from there.

those packets once used, are done. he'd need to buy a new one every day lol

[minibus4]

those packets once used, are done. he'd need to buy a new one every day lol

I threw a couple in my doors because I was getting side window moisture problems. They are still working even after a year. I just went to the surplus mega mall shoe stores and got as much as I want for free. If they dont work, then oh well, I got what I paid for. Id suggest it to anyone whose having similar problems. Probably will take a few to start off with but it should decline after a while.

[Rogue One]

I have a HUGE problem with fogging of the windows, it is cold here in Canada, and freezing forming a thick layer inside.
Takes us about 10 minutes to clear up the fog every time we leave the car for more than on hour.
Any idea ?

You might want to refer to your 2012 Owners Manual, sections 4-26 ~ 4-28

Dehumidified defogging:
This mode is used to defog the windows and dehumidify the air.
1. Turn the air flow control dial to the position.
2. Turn the fan speed control dial to the desired position.
3. Push the A/C button on. (The A/C indicator light will illuminate.)
4. Turn the temperature control dial to the desired position.

[sprocket]

To the OP, can you comment on the following:

1) # of people typically in the car (driver only, or with passengers)
===> more people equals more humidity

2) do you typically run the climate control in the "windshield" or windshield/foot combo mode, WITH the fan on
===> keeping the fan off will not operate the compressor and dehumidify regardless of the mode
===> keeping it in windshield mode will ensure dehumidification occurs, regardless of A/C switch setting
===> keeping it in other modes (face/vent or combination) with A/C and fan may also dehumidfy

3) what is the mode you usually leave it at when the car is turned off
If you do not sufficiently dehumidy the interior but leave it in the windshield mode, built up moisture within the vents and HVAC unit will "rise" up through the windshield vents and increase the likelyhood of freezing on the inside of your windshield.

Moisture builds up inside any vehicle from breathing, snow being tracked in, wet coats / umbrellas. If you don't dehumidy the interior sufficiently, the moisture will condense on the inside surface of the window and freeze.

A likely scenario in my experience to result in freezing inside is to:
- have enough moisture inside the vehicle (snow, moisture, etc)
- not run the A/C compressor to dehumidfy for a while.
- leave mode dial to windshield (i.e. open the windshield vent when the car is off)
- park outside in the day, some sun will warm the interior and make the moisture condense on the inside of the glass
- let it cool down, instant freeze

If this happens to you, you're not dehumifying sufficiently. Make sure to turn the blower ON and set it in any windshield or windshield combo mode, or foot/face mode with A/C and blower turned on. I drive a lot of freeway by myself and occasionally leave the blower in the off setting, mode to windshield, temp dial to "hot" and there's enough airflow to clear the windshield while the car is moving but problem is, I'm not decreasing the moisture within the car since the compressor is not running ... eventually, freezing will happen, ESPECIALLY if my mode is set to windshield when I turn the car off and park it outside all day.

[ImStricken06]

To the OP, can you comment on the following:

1) # of people typically in the car (driver only, or with passengers)
===> more people equals more humidity

2) do you typically run the climate control in the "windshield" or windshield/foot combo mode, WITH the fan on
===> keeping the fan off will not operate the compressor and dehumidify regardless of the mode
===> keeping it in windshield mode will ensure dehumidification occurs, regardless of A/C switch setting
===> keeping it in other modes (face/vent or combination) with A/C and fan may also dehumidfy

3) what is the mode you usually leave it at when the car is turned off
If you do not sufficiently dehumidy the interior but leave it in the windshield mode, built up moisture within the vents and HVAC unit will "rise" up through the windshield vents and increase the likelyhood of freezing on the inside of your windshield.

Moisture builds up inside any vehicle from breathing, snow being tracked in, wet coats / umbrellas. If you don't dehumidy the interior sufficiently, the moisture will condense on the inside surface of the window and freeze.

A likely scenario in my experience to result in freezing inside is to:
- have enough moisture inside the vehicle (snow, moisture, etc)
- not run the A/C compressor to dehumidfy for a while.
- leave mode dial to windshield (i.e. open the windshield vent when the car is off)
- park outside in the day, some sun will warm the interior and make the moisture condense on the inside of the glass
- let it cool down, instant freeze

If this happens to you, you're not dehumifying sufficiently. Make sure to turn the blower ON and set it in any windshield or windshield combo mode, or foot/face mode with A/C and blower turned on. I drive a lot of freeway by myself and occasionally leave the blower in the off setting, mode to windshield, temp dial to "hot" and there's enough airflow to clear the windshield while the car is moving but problem is, I'm not decreasing the moisture within the car since the compressor is not running ... eventually, freezing will happen, ESPECIALLY if my mode is set to windshield when I turn the car off and park it outside all day.

sprocket just dropped knowledge! great post

[Qashqai]

I have all season mats and during winter it is all covered with water/slush/snow. What I do during heavy snow storms is, I use a towel. That towel sucks all the water and at night, I bring it to home. Squeeze it at the outside, fold it and put it on the floor register at the entrance. Next morning, I take the dried towel from the top of the register and lay it on my floor mat.

I have no fog problems after this.