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      02-20-2012, 01:28 PM   #11
E90Fleet
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Drives: BMW
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Quote:
Originally Posted by syenisch View Post
Someone enlighten me... When is a good time to have the climate control unit set to bring in outside air? If the AC is on, it is much more efficient with it recirculating cabin air. If I want outside air, I crack a window or the sunroof. If I have the windows shut and have it set to bring in outside air through the vents, it gets stuffy no matter the conditions outside. What am I missing? :
Just using the inside air should cool the car sown quicker.

Setting it to let in outside air will let fresh air with oxygen in through the carbon activated filter. This filtered air should be much better for you than opening the window and letting unfiltered air in.

Dont know how it can become stuffy when you let fresh air in. Sure you arent using the controls backwards ?

I just usually leave it in Auto so the vents close if there is something nasty like diesel fumes from the cart in front in the air. Else they are open
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