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Fogging from vents with air-conditioning

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  • 01-07-2016 8:44pm
    #1
    micks_address
    Registered Users Posts: 8,461 ✭✭✭


    Hi folks,
    Noticed at the weekend fogging or misting coming from one of the cars air vents with air-conditioning on. With air con off it cleared up. Hadn't happen since. Could it be issue needy to get checked? Car is 142 civic
    Thanks
    Mick


Comments

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    #2
    Foxhole Norman
    Registered Users Posts: 5,875 ✭✭✭Foxhole Norman


    Check/Replace your pollen filter(s)!


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    #3
    micks_address
    Registered Users Posts: 8,461 ✭✭✭micks_address


    Foxhole Norman wrote: »
    Check/Replace your pollen filter(s)!

    Probably due at next service... Should I wait?


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    #4
    bazz26
    Registered Users Posts: 51,122 ✭✭✭✭bazz26


    micks_address wrote: »
    Probably due at next service... Should I wait?

    Well if the fogging is bothering you then change it now.


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    #5
    [Deleted User]
    Posts: 8,856 ✭✭✭ [Deleted User]


    I tend to have the opposite- fogging takes place when air-con off. Usually happens on humid days when i have the temperature down very low inside the car. Got the pollen filter changed recently and it's helped a lot but not all the time. what i find helps when humid conditions exist is directing the air into the car as opposed to right up to the windscreen only- doesn't tend to fog up as a result of doing this


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    #6
    micks_address
    Registered Users Posts: 8,461 ✭✭✭micks_address


    bazz26 wrote: »
    Well if the fogging is bothering you then change it now.

    It hasn't done it sense. I was just wondering if it could be gas leak from air conditioning?


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    #7
    mikeecho
    Registered Users Posts: 5,047 ✭✭✭mikeecho


    micks_address wrote: »
    Hi folks,
    Noticed at the weekend fogging or misting coming from one of the cars air vents with air-conditioning on. With air con off it cleared up. Hadn't happen since. Could it be issue needy to get checked? Car is 142 civic
    Thanks
    Mick

    Is this a regular issue.?
    Or was it a once off ?


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    #8
    micks_address
    Registered Users Posts: 8,461 ✭✭✭micks_address


    mikeecho wrote: »
    Is this a regular issue.?
    Or was it a once off ?

    Only happened one day... It was humid with a lot of rain moisture in the air


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    #9
    Atlantic Dawn
    Registered Users Posts: 81,186 ✭✭✭✭Atlantic Dawn
    M


    If you leave the air con on right before you park up it can then cause moisture when you turn on the ac next time your in the car, best to turn it off 2 or 3 mins before you park up. You likely need a new pollen filter now either way.


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    #10
    ShanE90
    Registered Users Posts: 237 ✭✭ShanE90


    The reason for this is when warm moist air hits the cool dry air it condenses and can be seen as fog, it will be worse at the vent outlets because the temperature of the supply air is at its lowest, also if the filter is blocked or fan speed low the fog may be more visable.
    It's not a fault and happens under certain conditions, if you use the temperature dial to blend in some warmer air this will Eliminate the fog.

    If the glass fogs on the inside after the ac has been on it's because the evaporator is wet. As said before turn the ac off a minute or so before stopping the car so the coil will dry off.

    If the glass fogs on the outside, usually the windscreen, this is because the glass directly at the vent outlets is cooled below the dew point. This only happens on the outside where the warm humid air hits the cold glass.


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    #11
    micks_address
    Registered Users Posts: 8,461 ✭✭✭micks_address


    ShanE90 wrote: »
    The reason for this is when warm moist air hits the cool dry air it condenses and can be seen as fog, it will be worse at the vent outlets because the temperature of the supply air is at its lowest, also if the filter is blocked or fan speed low the fog may be more visable.
    It's not a fault and happens under certain conditions, if you use the temperature dial to blend in some warmer air this will Eliminate the fog.

    If the glass fogs on the inside after the ac has been on it's because the evaporator is wet. As said before turn the ac off a minute or so before stopping the car so the coil will dry off.

    If the glass fogs on the outside, usually the windscreen, this is because the glass directly at the vent outlets is cooled below the dew point. This only happens on the outside where the warm humid air hits the cold glass.

    Definitely issue with air conditioning.. On or off blowing the same temp now.. Booked in to get checked next week


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    #12
    irlirishkev
    Registered Users Posts: 2,502 ✭✭✭irlirishkev


    micks_address wrote: »
    Definitely issue with air conditioning.. On or off blowing the same temp now.. Booked in to get checked next week

    Hey, similar problem on my 2007 Civic.
    Did you get it sorted, and if so, can you recommend somewhere?
    I was thinking Honda, but my wallet is arguing with me about it!

    Thanks!


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    #13
    micks_address
    Registered Users Posts: 8,461 ✭✭✭micks_address


    irlirishkev wrote: »
    Hey, similar problem on my 2007 Civic.
    Did you get it sorted, and if so, can you recommend somewhere?
    I was thinking Honda, but my wallet is arguing with me about it!

    Thanks!

    Honda regassed and it's been fine since. Done under warranty


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    #14
    irlirishkev
    Registered Users Posts: 2,502 ✭✭✭irlirishkev


    micks_address wrote: »
    Honda regassed and it's been fine since. Done under warranty

    Cheers.
    Gas is fine according to recent service. Might just bite the bullet and give it to them to fix..


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    #15
    Atlantic Dawn
    Registered Users Posts: 81,186 ✭✭✭✭Atlantic Dawn
    M


    irlirishkev wrote: »
    Cheers.
    Gas is fine according to recent service. Might just bite the bullet and give it to them to fix..

    Check the fuses/relays in the fusebox, sometimes you can temporarily swap a non important one like the horn to test if it's that. Here's a good guide, not your exact model but similar setup...

    https://www.youtube.com/watch?v=ZjQHMugkRfU


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