Fogging/condensation problem

[Karebu]

okay thanks

[Sotong_kia]

Fog on the outside means your aircon is damn cold ! And that humidity on the air outside is condensing onto your glass and even body.

 

So just raise the thermostat on your aircon.. no need so cold.

 

If you don't believe it is aircon, you try out :

At night, turn your aircon, block all vents except one side (either driver or passenger side) and make it blow onto the window.. Less than 3 min, you will see a streak of condensation on THAT window only.

 

Turn off the aircon, and wipe the water (on the outside) dry, wait a few seconds, you will still see it condensing. Why ? Cos the glass is still cold from the air-con.

 

Just like after drinking ice water from a glass, you pour away the ice, quickly dry the glass. leave it for a while, still got water condensing.

[Ghostrider]

I think your temp is set too low. That is why it fogs up.

 

Try lowering your temp and you should be alright...I drive in the early morning and I do not have this problem...my temp is set between 25 and 23 degree.

[Apollo]

but.. isn't the condensation happening on the outside.. so what does the humidity on the inside have to do with this?

 

(anyawy i did go open-air and using aircon on recycled mode - works.)

 

condensation is usually on the side which has higher humidity. humidity = moisture in gaseous phase + temperature differential.

 

it need not be something fr the car but it can b u, ur passengers, ur clothing, shoes, etc (source for moisture & heat).

[Russ]

If the condensation is on the outside, it means the car is cold, meaning, before you parked the car, the air cond was set rather cold, so it is like a bottle out of a fridge. Try setting your air cond at a more reasonable level. You also save fuel by doing so and your car will also feel more powerful when the aircon compressor is cut off (it will cut in and out to manage the temp inside)

 

On hot days, it does not happen as the RH outside is lower and the car air cond struggles to cope with the heat hence the temp differential between the car and the outside is small - also any condensation evaporates due to the heat outside.

 

At nights, there is no radiation heat to take away this moisture and the air is more saturated with moisture.

 

Oh, sometimes, even if the car air cond is off, you still get condensation due to dew forming when the temp drops and the air cannot hold that much moisture - that you cannot avoid.

[Lightfinger]

try switching the air con to bring in fresh air rather than circulate..

 

Yup, it works.

[Berneo]

Choose an air-con "blow setting" that is not blowing direct to your wind screen. This is reduce your cold air on glass plane and reduce condensation.