It takes energy to cool the air down, in the same way your fridge/freezer wouldn't work if it wasn't plugged in.
2007-02-17 13:30:28
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answer #1
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answered by Anonymous
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There will be a noticeable load on the engine when the compressor is running, but as long as the engine is not underpowered, there will be only a slight MPG loss. Some say this will be offset by less drag when the windows are rolled up as opposed to down. If you have A/C, I say, let 'er blow.. I'd want to be comfortable...
2007-02-17 15:05:21
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answer #2
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answered by Lee W 4
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Because having the AC on puts more load on the engine.
2007-02-17 21:00:59
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answer #3
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answered by boomer 2
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It takes 5 to 10 horsepower to run the compressor,depending on the ambient temperature.The hotter the ambient,the higher the head pressure will be,requiring more horsepower.
2007-02-17 13:37:44
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answer #4
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answered by gdwrnch40 6
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The same reason it burns more fuel when you keep your foot in it, you are exerting another load on the engine. More load, more fuel.
2007-02-17 13:27:59
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answer #5
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answered by darthanimal2 2
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you are using your engine to turn a pump, when the air cond. is off the engine does not have to work as hard. thus use less gas.
2007-02-17 13:29:01
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answer #6
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answered by piopo 3
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because it is belt driven by the engine and it takes power to run it when it is kicked on.
2007-02-17 13:32:40
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answer #7
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answered by mister ss 7
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it takes away the engines horsepower
2007-02-17 13:25:19
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answer #8
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answered by Mickirs 3
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you don't get anything for nothing!
2007-02-17 14:44:11
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answer #9
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answered by Anonymous
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