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Thread: Pano Roof is cold!

  1. #1

    Pano Roof is cold!

    So, while most were campaigning for the shade to keep the sun down, I think another reason might be to keep the car warmer.

    My wife sits in the back with our baby, and whenever I put the heat on, for some reason a draft begins to come from the roof. It's worse for her as her head is basically right under it, but if I put my hand up to the roof, I can feel the moving cold air there too. I wonder if it's because of some weird mini-weather condition up there? Like the warm air is hitting the cold air near seeping through the glass and then you have mini wind conditions? Clearly I have zero grasp on meteorological phenomena, but that's all I could think of as to why there would be moving cold air there when the heat is on, but not when it's off?

    I'm guessing a shade up there would solve this, but perhaps there's another solution too, like some insulating clear plastic?

  2. #2
    Model X #1417
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    Could the heater fan be blowing up onto the glass roof which rapidly cools it as it moves back to your wife? Maybe redirect the vents if that's possible?

  3. #3
    Quote Originally Posted by RDoc View Post
    Could the heater fan be blowing up onto the glass roof which rapidly cools it as it moves back to your wife? Maybe redirect the vents if that's possible?
    Today we figured out, it was more the front defrosters. I was completely turning off HVAC to test the difference, but didn't realize the front defrosters were on. It's still cold up there, but with the defrosters on, it's worse because it blows air straight up there and to the back seat.

  4. #4
    Senior Member kevincwelch's Avatar
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    General question: wouldn't it by design be cooler since an all glass panoramic roof offers less insulation? I've never owned one, but even with my Honda's sunroof it feels cooler when it's <40 degrees outside.

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  5. #5
    Yep... Thus the desire for the shade

  6. #6
    Member contaygious's Avatar
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    No shade coming from what I'm told...
    P427 Performance White/Tan

  7. #7
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    Quote Originally Posted by contaygious View Post
    No shade coming from what I'm told...
    Hmm, On Saturday morning, the guy in the Palo Alto showroom said there is a shade coming.

  8. #8
    CDN P285
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    Quote Originally Posted by AnOutsider View Post
    Yep... Thus the desire for the shade
    +1 to that!

    I can vouch for the radiant cooling effect of glass roofs in cars during winter.

    A shade (at least on my G37 and Subaru Legacy) greatly attenuates this.

  9. #9
    Member contaygious's Avatar
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    Weird I asked my delivery person at Fremont and he said that was not needed anymore he did say new visors are coming.
    P427 Performance White/Tan

  10. #10
    Leeroy Jenkins sublimaze1's Avatar
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    yay on the visors ...

    .. as for the Pano Roof, it is cold today (31) and the glass is very cold as well. But I am sure some of my fellow Texans will agree that a cold car beats a hot car any day. You can heat the seats and with a coat, it's really not that bad. IMHO, that is.

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