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What I really want to know is that if we run the ac of a car in full speed will the car consume more fuel than if we run the ac at a low speed.

2006-12-18 21:37:06 · 14 answers · asked by surajhejmadi 1 in Cars & Transportation Other - Cars & Transportation

14 answers

i don't think it will make any difference if AC is on high or low (economy or high)it will use a bit more fuel than if off (but comfort if worth the few cents it costs) if you live in a climate like mine QLD Australia

ps the speed you drive at will not effect the AC

2006-12-18 21:49:24 · answer #1 · answered by Anonymous · 0 0

Whenever U switch on the AC of the Car, The engine works more and thus burns more fuel than the non Ac performance, But when U run the AC at a higher speed compared to normal low speed there is no difference at all, Whenever the Compressor of the AC works the fuel consumption starts.
THANKS

2006-12-19 00:55:13 · answer #2 · answered by AVANISH JI 5 · 0 0

at what speed you run your ac won't matter. The blower for the ac is electric. The actual compressor that runs your ac will still turn at the same speed depending on the speed of your engine. Tests have shown that running the ac actually doesn't burn anymore fuel than if you don't. With the windows down you actually create a drag on the car and burn more fuel. I would recommend you crack a window until the ac then blows cool air and then close it and run it on recirc so that the air in the interior can circulate and stay cooler.

2006-12-18 23:32:57 · answer #3 · answered by r w 3 · 1 0

It would be so small that you wouldn't even notice. I assume that you mean low or full speed fan. To get the best efficiency out of you ac, you should have it set on recirculate. you do not want the vent or fresh air setting on. It will more quickly cool the air or dry it out, which is what an air conditioner does, hence the puddle of water under your car when you stop. The more humid the air, the more water you will have under your car.

The higher the fan setting, the more demand you will have on your charging system which will demand more fuel. Again very little as compared to not having your ac on at all. However, Most cars are designed to have much less wind drag when the windows are up. better fuel economy with the ac on/windows closed versus no ac/windows down. Also with the windows up you will not have that wind sucking noise on you ear.

I say for the amount of cost for ac just drive the best way you feel comfortable!

2006-12-18 23:10:19 · answer #4 · answered by brokylm3 1 · 0 1

In a car Engine the AC Unit Belt is connected to the engine belt, thus the speed with which the car travels is the same as the speed of the AC unit belt hence there is no connection to ac running in full speed or slow speed, the fuel consumption is same.

2006-12-18 21:53:47 · answer #5 · answered by ragesh50 2 · 0 0

Your will consume more fuel if the A/C is on.Fan speed will not make a difference as it is an electric motor and will consume little more amps when on high than low.When A/C is on it engages the compressor and strains the engine more and therefore consumes more fuel.Fan speed has nothing to do with it.

2006-12-18 21:49:17 · answer #6 · answered by harleyman 3 · 2 0

Running AC in full or slow speed doesn't effect.
But fuel consumption increases in both cases that if u drive slow speed i.e. <60 or high speed i.e. >70. Fuel consumption is best when the vehicle runs on the speed between 60 to 70.

2006-12-18 21:43:16 · answer #7 · answered by Anonymous · 0 2

Make a distinction between climate control and speed. Speed relates to the fan. If your car allows climate control, then lower the temperature, or to be more accurate - higher the difference between initial ambient temperature and your preferred temperature, the compressor has to do more work, and hence will draw more power from the engine and fuel in the process.

If you only control fan speed, then there should be no difference.

2006-12-19 04:44:58 · answer #8 · answered by WizardofID 3 · 0 0

The best way to cool your car is to run the AC out the center vents at medium speed. This gives the system time to cool the air. I don't know about fuel use but I do know this will give you the coolest air.

2006-12-18 21:47:43 · answer #9 · answered by Shawn M 1 · 2 1

It is constant. Fuel consumption is always constant give or take a few .01 of a mile. You will run out of gas in a short time if going a full speed only because you are going at a high speed. you will run out of gas in a longer time period, because the car it will take you longer to travel the same amount of distance.
PS. I don`t want to be in your car when you`re going do the interstate at full speed

2006-12-18 21:42:08 · answer #10 · answered by philmasen 2 · 0 2

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