ncranchero Posted December 10, 2010 Share Posted December 10, 2010 Now that it's COLD weather is anyone else having issues with the windows fogging up. No, I'm not breathing too heavily..... As long as I have the HVAC set to full heat on defrost only it keeps the glasses clear but as soon as I turn it to floor or dash heat the windows fog right back up. I had the dealer check for a clogged HVAC drain tube last time it was serviced. Who knows if they really looked at it though. Is this a common problem or should I just hunt it down myself? Quote Link to comment Share on other sites More sharing options...
azdamay Posted December 10, 2010 Share Posted December 10, 2010 It's not really that cold here in Northern California, but it is raining and sometimes colder. I find that the fixed portion of the door glass starts to fog near the mirror, and once I did have the windshield suddenly fog up on me for no apparent reason. That one was actually alarming, I've never had a (modern) vehicle suddenly fog up on me like that. But typically I can keep the defrost on at a medium heat and fan speed 1 or 2 and maintain clear windows, once the initial fogging is cleared. Quote Link to comment Share on other sites More sharing options...
ncranchero Posted January 30, 2011 Author Share Posted January 30, 2011 I have finally figured out that the fogging windows ARE my fault. No I'm NOT breathing too heavily but I think the fault lies in the HVAC being set to recirculate........duh! I deactivated the recirculate mode and have had no more fogged up windows. Quote Link to comment Share on other sites More sharing options...
Flying Media Posted February 1, 2011 Share Posted February 1, 2011 I have finally figured out that the fogging windows ARE my fault. No I'm NOT breathing too heavily but I think the fault lies in the HVAC being set to recirculate........duh! I deactivated the recirculate mode and have had no more fogged up windows. nice Quote Link to comment Share on other sites More sharing options...
feral Posted August 22, 2011 Share Posted August 22, 2011 Thanks for the info. I just purchased one and thought it strange as well. Quote Link to comment Share on other sites More sharing options...
kidcit Posted January 30, 2018 Share Posted January 30, 2018 Recirculate should be unavailable when defroster is on. With defroster off your breath is recirculated and bears more moisture than cold outside air Quote Link to comment Share on other sites More sharing options...
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