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Foggy windshield

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  • 17-12-2018 12:35am
    #1
    masterboy123
    Registered Users Posts: 5,722 ✭✭✭


    So as the weather is getting cold, my cars windshield is all fogged up in the mornings, I need to run heating for 2 min or so to get rid of it.
    I tried antiFog by Rain X last year with little help.

    Is there any other coating or trick to avoid getting foggy windshield?


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Comments

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    #2
    the_pen_turner
    Registered Users Posts: 7,506 ✭✭✭the_pen_turner


    use air con and get a dehumidifier for the car


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    #3
    masterboy123
    Registered Users Posts: 5,722 ✭✭✭masterboy123


    Will it put alot of strain on the engine if I use aircon on cold engine?

    And can you suggest a dehumidifier please?
    the_pen_turner wrote: »
    use air con and get a dehumidifier for the car


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    #4
    Seve OB
    Registered Users Posts: 15,847 ✭✭✭✭Seve OB


    Get a shammey


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    #5
    bazz26
    Registered Users Posts: 51,153 ✭✭✭✭bazz26


    When was the last time the cabin/pollen filter was changed?


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    #6
    Alanstrainor
    Moderators, Motoring & Transport Moderators Posts: 23,157 Mod ✭✭✭✭Alanstrainor


    Just use A/C, turn it on full blast straight away. A/C is a dehumidifier, you don't need to buy anything else. Once your A/C is working correctly you should be golden. Probably best to just leave it on tbh.


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    #7
    masterboy123
    Registered Users Posts: 5,722 ✭✭✭masterboy123


    Will it effect engine on long term by any chance?

    Usually I would turn on AC when car is warm enough.

    I had pollen filter changed 9 months ago.
    Alanstrainor wrote: »
    Just use A/C, turn it on full blast straight away. A/C is a dehumidifier, you don't need to buy anything else. Once your A/C is working correctly you should be golden. Probably best to just leave it on tbh.


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    #8
    the_pen_turner
    Registered Users Posts: 7,506 ✭✭✭the_pen_turner


    masterboy123 wrote: »
    Will it put alot of strain on the engine if I use aircon on cold engine?

    And can you suggest a dehumidifier please?

    any motor factors will have a desicant type.


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    #9
    the_pen_turner
    Registered Users Posts: 7,506 ✭✭✭the_pen_turner


    Alanstrainor wrote: »
    Just use A/C, turn it on full blast straight away. A/C is a dehumidifier, you don't need to buy anything else. Once your A/C is working correctly you should be golden. Probably best to just leave it on tbh.

    i would still add a back up one . it will be working away even if the car isnt used.


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    #10
    Alanstrainor
    Moderators, Motoring & Transport Moderators Posts: 23,157 Mod ✭✭✭✭Alanstrainor


    masterboy123 wrote: »
    Will it effect engine on long term by any chance?

    Usually I would turn on AC when car is warm enough.

    I had pollen filter changed 9 months ago.

    No it will not do any harm.

    You can buy a dehumidifier, but honestly I reckon it's just a waste of money. The A/C will do it's job without any need for any extras. If you were going to spend money I'd get the A/C regassed.


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    #11
    masterboy123
    Registered Users Posts: 5,722 ✭✭✭masterboy123


    Ok, will try tomorrow morning. Will set AC temperature to 25 C as I don't want to feel the cold air :)
    Alanstrainor wrote: »
    No it will not do any harm.


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    #12
    colm_mcm
    Registered Users Posts: 73,391 ✭✭✭✭colm_mcm


    masterboy123 wrote: »
    Ok, will try tomorrow morning. Will set AC temperature to 25 C as I don't want to feel the cold air :)

    It’ll be cold air whatever you set the temp to, as engine will be cold so your heater won’t heat the air.


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    #13
    Bill nye
    Registered Users Posts: 46 ✭Bill nye


    Also when you get a chance to, clean the car. Vacuum the mats and give the inside of the windscreen a good clean and ensure it's dried properly afterwards. It will make a massive difference in the morning.

    Wet shoes from these mornings are leaving mats damp etc and this contributes towards moisture in the cabin. As suggested earlier, swap your cabin pollen filter out for a new one from a motor factors. Usually cost around €10 and simple to replace. Ensure any damp coats are removed and not left in car overnight etc.


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    #14
    Del2005
    Registered Users Posts: 18,915 ✭✭✭✭Del2005


    Seve OB wrote: »
    Get a shammey

    That's the worst thing possible for a foggy window.


    The only way to have a clear windscreen is to clean the inside throughly and then never touch it again till you are cleaning it again, the fog will clear with the blower and faster with AC. Dirt/dust on the screen is what the condensation is sticking to.


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    #15
    SteelyDanJalapeno
    Registered Users Posts: 14,243 ✭✭✭✭SteelyDanJalapeno


    Just to add to the clean the car comment, it's because there's moisture in the car somewhere, a good trick I use is get the engine warmed up and then when you have 15-20 minutes, leave the car running idle turn the heaters on max heat for the feet setting and open the windows an inch or 2.

    The circulating hot air will bring out any moisture in the car and dry your carpets well.


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    #16
    Isambard
    Registered Users Posts: 5,796 ✭✭✭Isambard


    colm_mcm wrote: »
    It’ll be cold air whatever you set the temp to, as engine will be cold so your heater won’t heat the air.

    i'm guessing the problem is the vents aren't on "screen" based on that.


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    #17
    masterboy123
    Registered Users Posts: 5,722 ✭✭✭masterboy123


    I have vacuumed the mats, you're right they are bit damp.

    Is it easy to replace cabin pollen filter in a Benz C class, 151 model?
    Bill nye wrote: »
    Also when you get a chance to, clean the car. Vacuum the mats and give the inside of the windscreen a good clean and ensure it's dried properly afterwards. It will make a massive difference in the morning.

    Wet shoes from these mornings are leaving mats damp etc and this contributes towards moisture in the cabin. As suggested earlier, swap your cabin pollen filter out for a new one from a motor factors. Usually cost around €10 and simple to replace. Ensure any damp coats are removed and not left in car overnight etc.


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    #18
    EdgeCase
    Closed Accounts Posts: 2,471 ✭✭✭EdgeCase


    Put AC on recirculation, close the doors and windows and it should remove the moisture from the air inside the cabin.

    The windows should clear really fast as the air dehumidifies. It doesn't even need to be set particularly hot to do this. Just a comfortable temp.


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    #19
    Isambard
    Registered Users Posts: 5,796 ✭✭✭Isambard


    masterboy123 wrote: »
    I have vacuumed the mats, you're right they are bit damp.

    Is it easy to replace cabin pollen filter in a Benz C class, 151 model?

    that should be done as part of the service .


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    #20
    masterboy123
    Registered Users Posts: 5,722 ✭✭✭masterboy123


    That's due in March. Will wait so.

    Thanks everyone
    Isambard wrote: »
    that should be done as part of the service .


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    #21
    Del2005
    Registered Users Posts: 18,915 ✭✭✭✭Del2005


    masterboy123 wrote: »
    That's due in March. Will wait so.

    Thanks everyone

    That's 4 months of foggy windows. It should be straightforward to change the pollen filter. Check the owners manual it'll have instructions, it shouldn't require any tools.


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    #22
    corks finest
    Registered Users Posts: 8,642 ✭✭✭corks finest


    EdgeCase wrote: »
    Put AC on recirculation, close the doors and windows and it should remove the moisture from the air inside the cabin.

    The windows should clear really fast as the air dehumidifies. It doesn't even need to be set particularly hot to do this. Just a comfortable temp.
    I'm doing it wrong so,I put AC on as normal ( air set coming into car from outside) thought that was the proper way? So after condensation evaporates,u switch AC back to normal?


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    #23
    colm_mcm
    Registered Users Posts: 73,391 ✭✭✭✭colm_mcm


    corks finest wrote: »
    I'm doing it wrong so,I put AC on as normal ( air set coming into car from outside) thought that was the proper way? So after condensation evaporates,u switch AC back to normal?

    What that’s doing is processing the air (and thus some of the moisture) in the cabin through the air conditioner.


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    #24
    ianobrien
    Registered Users Posts: 2,756 ✭✭✭ianobrien


    OP, this is what would be doing.

    First step is clean the windscreen properly inside (get AutoGlym Fast Glass or equivalent) and then don't touch the glass again (unless it's to clean with more glass cleaner).

    Second is to leave the climate control on auto with the temperature set to what's comfortable (mine is 18C) with the a/c on. I've the recirculation set to auto also.

    Third is use the windscreen button on the HVAC controls. That's designed to clear windscreens. Once clear, switch the HVAC back to auto (with a/c on)

    Result is clear windscreen, always.

    You have made the classic mistake of thinking a/c just chills air. The a/c also dries the air and dried air then passes through the heater, meaning warm dry air. A/c is more useful in winter given our damp climate. Using the a/c is only a small load on the engine and isn't a problem having it on after start-up (if it was,it would be in the owners manual)


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    #25
    fjon
    Registered Users Posts: 2,084 ✭✭✭fjon


    Tips on how to do this if you don't have AC? I used to have it and it worked great, but now every day I have a very foggy car.


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    #26
    ianobrien
    Registered Users Posts: 2,756 ✭✭✭ianobrien


    fjon wrote: »
    Tips on how to do this if you don't have AC? I used to have it and it worked great, but now every day I have a very foggy car.

    Clean windscreen (use IPA to decrease) and a coating of CarPro FogFight. The FogFight works wonders. Then, don't touch the windscreen.

    Make sure the car is dry and use the recirculation to dry out the air in the car

    Also, never buy a car without a/c


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    #27
    SweetCaliber
    Registered Users Posts: 2,464 ✭✭✭SweetCaliber


    I had this problem, got one of those dehumidifier bags in halfords, left it on the dash and the next morning no condensation and no foggy windscreen.


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    #28
    ELM327
    Registered Users Posts: 21,520 ✭✭✭✭ELM327


    fjon wrote: »
    Tips on how to do this if you don't have AC? I used to have it and it worked great, but now every day I have a very foggy car.
    Bring it back. The AC is clearly faulty.


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    #29
    fjon
    Registered Users Posts: 2,084 ✭✭✭fjon


    ELM327 wrote: »
    Bring it back. The AC is clearly faulty.

    It's a 10 year old car with 200,000km. The aircon motor/ compressor broke a year ago and I don't want to spend the €600 to replace it.
    Before it broke it worked wonderfully though - it's just the last month I've had foggy windows.


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    #30
    corks finest
    Registered Users Posts: 8,642 ✭✭✭corks finest


    ianobrien wrote: »
    OP, this is what would be doing.

    First step is clean the windscreen properly inside (get AutoGlym Fast Glass or equivalent) and then don't touch the glass again (unless it's to clean with more glass cleaner).

    Second is to leave the climate control on auto with the temperature set to what's comfortable (mine is 18C) with the a/c on. I've the recirculation set to auto also.

    Third is use the windscreen button on the HVAC controls. That's designed to clear windscreens. Once clear, switch the HVAC back to auto (with a/c on)

    Result is clear windscreen, always.

    You have made the classic mistake of thinking a/c just chills air. The a/c also dries the air and dried air then passes through the heater, meaning warm dry air. A/c is more useful in winter given our damp climate. Using the a/c is only a small load on the engine and isn't a problem having it on after start-up (if it was,it would be in the owners manual)
    Thank you,cleared up that.


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    #31
    corks finest
    Registered Users Posts: 8,642 ✭✭✭corks finest


    corks finest wrote: »
    ianobrien wrote: »
    OP, this is what would be doing.

    First step is clean the windscreen properly inside (get AutoGlym Fast Glass or equivalent) and then don't touch the glass again (unless it's to clean with more glass cleaner).

    Second is to leave the climate control on auto with the temperature set to what's comfortable (mine is 18C) with the a/c on. I've the recirculation set to auto also.

    Third is use the windscreen button on the HVAC controls. That's designed to clear windscreens. Once clear, switch the HVAC back to auto (with a/c on)

    Result is clear windscreen, always.

    You have made the classic mistake of thinking a/c just chills air. The a/c also dries the air and dried air then passes through the heater, meaning warm dry air. A/c is more useful in winter given our damp climate. Using the a/c is only a small load on the engine and isn't a problem having it on after start-up (if it was,it would be in the owners manual)
    Thank you,cleared up that.
    No, sticking it on recirc will make it worse if anything - remember that the air you breathe out is humidified with lung-juice (ick!)more conflict ING information I just copy and pasted from some car advice forum,I dunno


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