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Is the HVAC system always on?

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Old May 27, 2014, 06:58 AM
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Question Is the HVAC system always on?

I have noticed that if I leave the temperature gauge on hot or cold with the fan OFF while driving at speed, you can feel the air coming through the vents is whatever you set the temperature to. Could this be the cause for poor fuel economy?
Old May 27, 2014, 07:00 AM
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I can feel the samething as well
Old May 27, 2014, 07:22 AM
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interesting observation.
I have not noticed that occurring.

Guess you could remove the fuse or the relay to the A/C compressor and see if there's a change.
Old May 27, 2014, 08:56 AM
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If you are not recirculating the air then you will have airflow while driving.
Old May 27, 2014, 01:59 PM
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Originally Posted by Kerr
If you are not recirculating the air then you will have airflow while driving.
Yes, we all know that and that is not the problem.
Old May 27, 2014, 03:34 PM
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I asked about this at the dealer, and was told that when the HVAC is OFF, press the recirculating button (middle of the left knob), which will close off the outside air intake, and nothing will come out of the vents.


It works.
Old May 27, 2014, 04:33 PM
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Originally Posted by Burtonrider1002
I asked about this at the dealer, and was told that when the HVAC is OFF, press the recirculating button (middle of the left knob), which will close off the outside air intake, and nothing will come out of the vents.


It works.
Everyone please reread the original post. The problem is not air flowing through the vents, that is normal. The problem is the HEAT or AC still being on. I'm going to stop here so you two can reread the post.
Old May 27, 2014, 05:32 PM
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So on say a cold day you can feel heat coming from the vents if it's set to warm and blower off and on a hot day you can feel cold coming from the vents if it's set to ac and the blower off?
Old May 27, 2014, 05:47 PM
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Originally Posted by mgb
So on say a cold day you can feel heat coming from the vents if it's set to warm and blower off and on a hot day you can feel cold coming from the vents if it's set to ac and the blower off?
On DOESN'TMATTERWHATTEMPURATURE it is day, the natural flow of air coming through the vents while at speed, will be the temperature of whatever you have your temperature setting on with the FAN OFF.

You guys seriously need to work on your reading comprehension.
Old May 27, 2014, 08:21 PM
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So if you have the fans OFF, the AC on how does it feel OUTSIDE? 12mpg?
Old May 27, 2014, 08:32 PM
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Originally Posted by Wesley Eng
On DOESN'TMATTERWHATTEMPURATURE it is day, the natural flow of air coming through the vents while at speed, will be the temperature of whatever you have your temperature setting on with the FAN OFF.

You guys seriously need to work on your reading comprehension.
^

I think Wes is angry...
Old May 27, 2014, 08:39 PM
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All I see is a load of hot air
Old May 27, 2014, 10:22 PM
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Originally Posted by mgb
All I see is a load of hot air
Old May 28, 2014, 03:45 AM
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evo's are ******, they can't stop blowing :P
Old May 28, 2014, 07:03 AM
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every car i have owned does this when its pulling air from the outside. its not like having the AC or heat on, but the temp knob does change how the air feels since its passing through the system just like if it was on with the blower.


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