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| This is a discussion on The AC effect within the Gen III 2010 Prius Fuel Economy forums, part of the Gen III (2010+) Toyota Prius Forums category; What is the estimated effect of running the AC while driving? I realize there are many variables that can effect ... |
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The AC effect
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11-05-2009, 06:26 PM
| #1 |
| Junior Member Join Date: Nov 2009 Location: Fort Worth, Texas
Posts: 1
My Car: 2010 Prius Model: II Package: No Package Thanks: 0
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Friends: 0 |  The AC effect What is the estimated effect of running the AC while driving? I realize there are many variables that can effect this figure but maybe someone has observed xx mpg drop w/AC verse w/o AC. Thanks.... |
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11-05-2009, 06:33 PM
| #2 |
| Senior Member Join Date: Aug 2008 Location: Albany Ga.
Posts: 732
My Car: 2010 Prius Model: III Package: N/A Thanks: 19
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Friends: 0 | Re: The AC effect I think you hit the nail on the head with the too many variables statement. I believe it's generally accepted that the AC's effect on mileage is less than leaving the windows down. There is an effect obviously, I think it could be calculated if the amperage draw of the AC were known, but I think it's a variable speed compressor and therefore variable amperage draw. And then there are of course other considerations, like I assume the traction battery doesn't like high temps and I assume the AC has some effect on cooling it? |
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11-05-2009, 06:45 PM
| #3 |
| An Aussie perspective  Join Date: Jul 2007 Location: Adelaide South Australia
Posts: 9,184
My Car: 2004 Prius Model: N/A Package: Base Thanks: 120
Thanked 179 Times in 137 Posts
Friends: 33 | Re: The AC effect What is the cost of cleaning sweat stains out of the seats? Windows down? My dad had 2 hearing aids because he drove with the windows down. |
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11-05-2009, 08:04 PM
| #4 | |
| Senior Member  Join Date: May 2009 Location: South Florida
Posts: 111
My Car: 2010 Prius Model: IV Package: Solar Roof Thanks: 9
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Friends: 3 | Re: The AC effect Quote:
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11-05-2009, 10:14 PM
| #5 |
| Tsar of all the Rushers  Join Date: Apr 2009 Location: Greenwood MS USA
Posts: 378
My Car: 2009 Prius Model: N/A Package: #5 Thanks: 17
Thanked 66 Times in 53 Posts
Friends: 3 | Re: The AC effect USA is a little vague. I live in the Mississippi Delta, all summer I got 42 MPG, (95 degrees, high humidity) now I am getting 47 MPG in 60 to 70 degree temps. |
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11-06-2009, 12:25 AM
| #6 |
| Senior Member  Join Date: Sep 2009 Location: Cowtown
Posts: 218
My Car: 2010 Prius Model: IV Package: Base Thanks: 22
Thanked 16 Times in 13 Posts
Friends: 0 | Re: The AC effect My average MPG seems to be about the same in hot or cold temps. So there might also be some overhead running the heater, as well as the compressor running with the defroster. |
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