Auto climate with AC on in the winter?
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Cadillac ATS Technical Discussion Forum Discussion, Auto climate with AC on in the winter? in Cadillac ATS Discussion Forums; Who here uses 'Auto' for the climate control in winter? I've switched to manual mode and turned off the AC ...
  1. #1
    Bryce2.0T is offline Cadillac Owners Fanatic
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    Auto climate with AC on in the winter?

    Who here uses 'Auto' for the climate control in winter? I've switched to manual mode and turned off the AC and noticed +1 MPG just by doing that.

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    MoistCabbage's Avatar
    MoistCabbage is online now Cadillac Owners 10000+ Posts
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    Yup. The only time you need A/C in the winter is if the windows start fogging up (A/C is on in defrost, you can't shut it off).

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    Hoosier Daddy's Avatar
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    Re: Auto climate with AC on in the winter?

    I use auto all the time to maximize fuel usage. Basically I think an ice age is coming and we need all the global warming we can get. Either that or because I'm lazy.

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    Re: Auto climate with AC on in the winter?

    I use auto all the time as well because well, it handled everything automatically. I had this discussion before regarding my last car. No one understood why the A/C was on in the winter. It's not on to 'cool you off' from all the hot air blown into the car, but rather to dehumidify the air, thus resulting in defogged windows. Maybe I'm just lazy, but I put it on Auto and 73* year round. I never understood why people put their heat on 80* in the winter. You have a jacket on to keep you warm. Maybe if I sat there in shorts and a t-shirt, I'd want my climate control set at 80*. Put it at a comfortable temperature and the vehicle will do it's job and get to that temperature the most efficient way. But, to each their own.
    GJB and Ragtop 99 like this.

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    Mark140 is offline Cadillac Owners Member
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    Re: Auto climate with AC on in the winter?

    I drive it like I stole it. The minimal AC stain on the MPG's don't matter when you're having fun.

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    Re: Auto climate with AC on in the winter?

    Yea I'm lazy too, I just leave it on "auto" - works for me.

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    GJB
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    Re: Auto climate with AC on in the winter?

    Quote Originally Posted by Ancient Mariner View Post
    Yea I'm lazy too, I just leave it on "auto" - works for me.

    I use auto because it keeps me always comfortable and it’s one less thing for me to have to mess with. I wanted sport and luxury and auto setting in some applications is part of what luxury is all about. Another benefit is you should use auto because you want to keep the Freon running and seals lubricated, worst thing you can do for an AC system is let it sit.
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    Re: Auto climate with AC on in the winter?

    I'll notice the defrost function is sending cool air to the side windows and windshield and heat to my feet. That's a good combination. With the butt warmers and heated wheel, 68* on auto makes for a comfy cabin.

  10. #9
    dirty south Guest

    Re: Auto climate with AC on in the winter?

    I've only had the car for a few weeks, but have found that hitting "AUTO" and then tapping the ac to off on the cue, works well...So it's auto fan and auto vent...I mean it is winter and all...

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    Re: Auto climate with AC on in the winter?

    Quote Originally Posted by dirty south View Post
    I've only had the car for a few weeks, but have found that hitting "AUTO" and then tapping the ac to off on the cue, works well...So it's auto fan and auto vent...I mean it is winter and all...
    Read above. The A/C kicks on for a reason in the winter.

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    thegabbycat is offline Cadillac Owners Member
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    I am curious. What is everyone's definition of winter? I understand that the ac system and the compressor have a thermal override. The compressor will not engage if outdoor temperature is below a certain temperature.

    See page 8-8 of the owners manual under the climate control section.

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    Re: Auto climate with AC on in the winter?

    Quote Originally Posted by thegabbycat View Post
    I am curious. What is everyone's definition of winter?
    21 December to 20 March
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  14. #13
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    Re: Auto climate with AC on in the winter?

    I do, nearly always, especially when it's humid. If it's a dry cold, perhaps I'll turn off the A/C and just go with heat but for simplicity's sake, I usually run full auto to keep everything lubed and ensure there's no humidity in the cabin.

    I'm in Northern VA.

    ----------

    @GJB - I saw that one coming! ;-)
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  15. #14
    Bertha D Blues's Avatar
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    Re: Auto climate with AC on in the winter?

    I use auto exclusively. And, I live in the fourth coldest city (according to The Weather Channel) in the US.

  16. #15
    Hot Rod Joe is offline Cadillac Owners Member
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    Re: Auto climate with AC on in the winter?

    It's so humid most of the time in SE VA that I now leave it in auto. I got tired of messing with the system everytime the windows fogged up.

    Does anyone else here notice that the re-circ mode allows some outside air in? There are some stinky (low tide smell) areas around here that I need to block out. Also, road salt from de-icing bothers me when the dust gets in the cabin. I know the system is disigned to switch back to fresh air after a time but mine never seems to completely block out outside air.

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