Defrost/AC

Post by **piratefan** » Fri Jan 28, 2011 5:48 am

I am not sure where this goes, so I apologize if I have posted it in the wrong forum.

Every time I use the defrost the AC comes on (hot, of course). I wonder if there is a reason Nissan would program this? This happens in my wife's Mazda CX-9 and a friend's Evo as well.

Can someone explain that?

Post by **srellim234** » Fri Jan 28, 2011 2:16 pm

The vehicle uses the a/c to remove the humidity from the air. Otherwise the fan would just blow moist air and keep the windows fogged up.

Post by **piratefan** » Fri Jan 28, 2011 2:30 pm

Is there a significant effect on fuel mileage?

Post by **Andrews Chalmers** » Fri Jan 28, 2011 4:41 pm

piratefan wrote:Is there a significant effect on fuel mileage?

Up to around 10%. I usually leave the compressor off unless I'm having fogging issues.

Defrost/AC

Defrost/AC

Re: Defrost/AC

Re: Defrost/AC

Re: Defrost/AC

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