[s-cars] AUTO button on Climate Control

[Joshua van Tol]

This behavior is actually the norm in the auto industry for automatic  
climate controls. The reason is that it helps control cabin humidity,  
and the auto manufacturers are scared silly about someone having  
fogged up windows, crashing the car, and blaming the auto  
manufacturer. Also, it turns out that without active humidity  
control, on average the car is more comfortable with air that's been  
dried. Also, because the temperatures are relatively cool, not much  
cooling is required to get the air down to 40 degrees F or so, and  
hence not much energy is required to run the AC.


On Oct 9, 2006, at 10:44 AM, JR wrote:

> Here's something that has been bugging me since I bought this car, but
> not enough to bring it to the front of my brain where I might ask why
> until now:  Why does the AUTO button on my climate control control  
> panel
> ALWAYS turn the A/C compressor on?  I can set the temp to HI (well  
> above
> 80) on a subzero outside day and it will ALWAYS light up the snowflake
> and turn on the A/C compressor when I press it.  I would think that it
> would simply adjust the A/C, heater and fan so as to achieve the
> temperature that I select, but if I select a hot temperature or if  
> it's
> cold outside, why the A/C compressor?  Is this normal or is my CC  
> system
> wacky?
>
> JR
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