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Interior fogging up

Posted: Wed Nov 27, 2019 7:57 pm
by Lusky
Hi all,
Just after a bit of advice. Following the recent heavy rain I've noticed the interior windows fogging up quicker than in the past. Obviously a blast of aircon on demist clears it and continuos demist with aircon keeps everything clear, but aircon consumes petrol. Any ideas what might be causing this? I've checked the boot etc. for any wetness and I can't find anything. TIA
Lusky

Re: Interior fogging up

Posted: Wed Nov 27, 2019 8:09 pm
by andy2019
heating and warm air inside car causes the windows to mist up. aircon won`t make that much difference to your mpg.

Re: Interior fogging up

Posted: Wed Nov 27, 2019 8:35 pm
by gloucester
I left my air-con on all the time.

Could be damp under the carpets such that you can't actually feel it.

Re: Interior fogging up

Posted: Wed Nov 27, 2019 8:42 pm
by Lusky
Aircon must make a difference to MPG, the engine has to work that much harder doesn't it? Dampness under the carpet is one idea, but where would it come from?

Re: Interior fogging up

Posted: Wed Nov 27, 2019 8:56 pm
by gloucester
You might check the pollen filter isn't damp?

Re: Interior fogging up

Posted: Wed Nov 27, 2019 9:29 pm
by Lusky
gloucester wrote: ↑Wed Nov 27, 2019 8:56 pm You might check the pollen filter isn't damp?
Can you elaborate? This sounds interesting, wouldn't it create a problem when the aircon is on?

Re: Interior fogging up

Posted: Thu Nov 28, 2019 6:48 am
by DaveBerlin
Lusky, did you read this recent post it might be of help.
At the start of the winter time I always place either small Henkel De-Humidifer Packs or the Bigger Version from Lidl, which although on the Big Side does it job well. I have never had a water or bad de-misting problem in the QQ it’s just I suppose a precaution. In 2014 our Sales Guy also recommended to keep the Panoramic Sliding Roof Open in the Winter so the Air can get around and prevent mildew buildups, this also appears to work. Just a comment from what I have found others might differ - Dave πŸ˜‰

https://www.qashqaiforums.co.uk/viewtopic.php?f=19&t=9009

Re: Interior fogging up

Posted: Thu Nov 28, 2019 8:01 am
by MikeGC
I never turn the air conditioning off and regularly got 60+mpg in my diesel cars (QQ and Juke) and nudging 50mpg in my current QQ.
This not only keeps your windows clear but helps maintain a healthy set of seals on your air con system.

Re: Interior fogging up

Posted: Sat Nov 30, 2019 3:21 pm
by Lusky
DaveBerlin wrote: ↑Thu Nov 28, 2019 6:48 am Lusky, did you read this recent post it might be of help.
At the start of the winter time I always place either small Henkel De-Humidifer Packs or the Bigger Version from Lidl, which although on the Big Side does it job well. I have never had a water or bad de-misting problem in the QQ it’s just I suppose a precaution. In 2014 our Sales Guy also recommended to keep the Panoramic Sliding Roof Open in the Winter so the Air can get around and prevent mildew buildups, this also appears to work. Just a comment from what I have found others might differ - Dave πŸ˜‰

https://www.qashqaiforums.co.uk/viewtopic.php?f=19&t=9009
Hi Dave I have one of the large bags of De-Humidifer stuff, just recharged it in the microwave in case it had too much moisture in it.
Hadn't thought about the sliding roof, might try it.

Re: Interior fogging up

Posted: Sat Nov 30, 2019 8:52 pm
by gloucester
Lusky wrote: ↑Wed Nov 27, 2019 9:29 pm
gloucester wrote: ↑Wed Nov 27, 2019 8:56 pm You might check the pollen filter isn't damp?
Can you elaborate? This sounds interesting, wouldn't it create a problem when the aircon is on?
https://www.honestjohn.co.uk/askhj/answer/37688/nissan-qashqai---internal-condensation

If the pollen filter is sodden with water this would be the reason for the condensation.


https://www.confused.com/on-the-road/maintenance/how-to-beat-condensation-in-your-car

A blocked pollen filter, which cleans air entering the car, can be another possible cause.


https://forums.moneysavingexpert.com/showthread.php?t=2884948

Check to see if your pollen (cabin) filter is wet. It could be that water got into it somehow and now wet air is being blown into your car