Windows steaming up
#1
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Windows steaming up
Hi all,
My 2007 Hawk STi seems to have a new issue.
After a run with the A/C on, the insides of the windows are fine. Park the car up. Get back into the car after 10 or 20 mins....start the car with the A/C already on, and all the windows steam up on the inside, almost instantly.
Anyone else get this, it it just the colder weather? I've never noticed it before in previous years though?
Maybe the A/C needs a re-gas?
My 2007 Hawk STi seems to have a new issue.
After a run with the A/C on, the insides of the windows are fine. Park the car up. Get back into the car after 10 or 20 mins....start the car with the A/C already on, and all the windows steam up on the inside, almost instantly.
Anyone else get this, it it just the colder weather? I've never noticed it before in previous years though?
Maybe the A/C needs a re-gas?
Last edited by Hawkeye D; 30 November 2022 at 06:50 PM.
#5
Scooby Regular
Do you run your A/C on outside air or in recirc mode?
#7
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#10
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iTrader: (5)
This always happens to me too.
my theory is:
I’m out driving with hot air on, because I like it when it’s toasty, and breathe and add loads of moisture to the air (which it can hold fine, because warm air holds more moisture than cold). Everything is fine because my windows are above the dew point (because I’m blasting hot air).
Then I park up for a bit, and the windows go cold, and therefore they become colder than the dew point, but not a lot of water condensate on them, because there’s not a whole lot of air movement inside the car.
now I jump back into the car and the fan moves all that lovely moist air across the cold windscreen, and the warm air turns cold, and the water vapour becomes dew (which you are as mist).
my theory is:
I’m out driving with hot air on, because I like it when it’s toasty, and breathe and add loads of moisture to the air (which it can hold fine, because warm air holds more moisture than cold). Everything is fine because my windows are above the dew point (because I’m blasting hot air).
Then I park up for a bit, and the windows go cold, and therefore they become colder than the dew point, but not a lot of water condensate on them, because there’s not a whole lot of air movement inside the car.
now I jump back into the car and the fan moves all that lovely moist air across the cold windscreen, and the warm air turns cold, and the water vapour becomes dew (which you are as mist).
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#14
Scooby Regular
I noticed the same actually. I think it's cold windows and the first waft of air from the air conditioning seems to contain enough moisture to fog up a bit but it clears quickly. I'd think it's normal but haven't regassed the aircon or changed the filter recently. A great tip to keep the moisture in check is putting a moisture trap inside the car, especially if not driven regularly.
#15
Scooby Regular
I noticed the same actually. I think it's cold windows and the first waft of air from the air conditioning seems to contain enough moisture to fog up a bit but it clears quickly. I'd think it's normal but haven't regassed the aircon or changed the filter recently. A great tip to keep the moisture in check is putting a moisture trap inside the car, especially if not driven regularly.
#17
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robport
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16 February 2003 11:24 PM