Hey,

Your windows fog up, and here goes the game of defrosting, especially the windshield...setting the temp High then Low....so my question is, how do you go about setting the right temperature? Do you set it according to the outside weather? I seem to crack the windows open and that does the job, but in the rain that approach sux even with the rainguards.

 

When it rains, you turn on the air conditioning and that prevents fogging of the windows. The A/C can be used in conjunction with the heater, so there's still hot air coming out of the vents ... its just DRY hot hair so it doesn't fog the windows.

If the fog is real bad, pressing the front defroster button will do something similar, it will turn on the A/C at full blast and pump the air out through the top vents.

 

I have no clue about the answer to that, but for those interested most of the fog on your windows is from the water vapor in the air condensing against the cold glass. This works both ways, if its cold in doors and really humid out doors you could see condensation on the out side glass (like dew) and if its humid in the car and cold out side you could see condensation inside the car glass. So usually you have to keep playing around with the temp until you find a close enough temp that is above the dew point. I also think that dirt or dust particles on the glass tend to increase the condensation levels by increasing the surface area for the water to contact.

I know I'm just restating the obvious and didn't help with the question at all, but just thought I'd add my 2 cents.

 

have you wver noticed when you turn on your defrost the ac turns on, it to dry the air in the car. i always use teh defrost/floor setting and turn the ac on. in the winter my temp controller rarly leaves 70 for normal driving. and it keeps teh windows cleared just fine. every no and then ill turn the temp down but turn the fan speed up a little

 

no matter what temp or speed you have the fan on in the car, you just press AC and that clears it up.... even if your pumpiing out 80degree air or 60degree air... AC just cleans it all up

 

 

correct. BUT you start to cook your self if the temp is at 80 and the fan is cranked. that why i said to turn the temp down a little as the fan speed goes higher

 

 

there has to be away without me either cooking myself or freezing. If its raining and its cold outside, I go with the warm setting, with its hot ouside, I go with the cold setting. Kind of trying to reverse the process of condensation.

I dont know, I thought I can get an explanation so I know what temp to set best to what environment.

thank you guys!!!

 

Teknoking,
The temperature (outside or inside) really shouldn't matter. What you want to do is get the water out of the air. The AC will do that.

 

Like phins2rt said ... its not the temperature that fixes the problem, its the A/C itself. So if your windows are fogged up really bad and you need it fixed quick, I'd recommend using the defroster button (not the rear one) with whatever temperature you want. Then once the windows clear up, just set the temperature to whatever you want and press the auto button. The A/C will automatically be on and it will keep the humidity in the car low so you won't get any condensation ... If there's no water in the air, then there's nothing to condense on the windows, even if there's a big temperature difference between inside and out.

Personally, I leave my thermostat set at 70 and when its raining outside (which is normally when I have condensation on the windows), then I turn on the A/C. If its not raining out then I leave the A/C off and just leave the thermostat on and set to 70. In the summer of course, I use the A/C most of the time to help cool down the car.

 

is there any type of window cleaner that you can apply on your windows to avoid fogging?

eg.. eye glasses have this type of spray that prevents fog up...

i've only seen the hard crayon like wax applied onto peoples glasses and you just wipe them down. They won't fog up for a long period if you don't wipe the wax off...

 

i suppose that woudl help

 

keeping the inside of your windows clean will reduce fogging. there're also anti-fog cleaners you can buy from auto parts stores.

 

RainX makes an anti fog product. I tried it once, but must not have liked it since I never used it again. Can't recall why I didn't like it though...

 

i find using WINDEX helps alot.....try it out. it works .... keep it clean with windex n you'lll find no matter what temperture u use, it'll defog faster n better....

 

If you've got tint, then don't use Windex ... you're better off using a cleaner that isn't ammonia based like Windex. Windex will eat away at the tint film and eventually your tint will fall apart ... I use Stoner Invisible Glass cleaner, which is safe for tint.