Quote:
Originally Posted by Ecky
In my car, the loss can be 15-20mpg on the high end. Mine you these are cases where that's only 15-20% total fuel economy, and really blasting the A/C, but it's non-trivial.
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Saving even 10% power running the AC would be significant IMO, and I'm pretty sure the efficiency gain would be larger than that. Not only does the car cool down quicker and the compressor runs less, the compressor takes less power while it is running because the head pressure is lower.