Wednesday, April 10, 2013

Burn Up or Burn Gas? The A/C Dilemma



As soon as the temperature goes up, the air conditioning goes on.  But, what is the cost of that comfort?  


Anything you switch “on” in your car will make your battery work harder, and that battery is getting its juice from that expensive gas you put in the tank.  So, should you keep the air conditioning off and the windows down?  The answer is… maybe.

At slower speeds, you are doing yourself and your mileage a favor by having the windows down.  But, those savings seem to go away as you go faster.  In fact, one study done in 2005 by Edmunds suggests that having the windows down while driving over 55 miles per hour burns the same gas as driving at 55 with the windows up and the air conditioning on.  Having the windows down causes drag on your car, and that burns more gas.

To help save gas and make sure your air conditioning is running properly, be sure to service the system once a year.  Also, try to park in shaded areas and leave the windows open.  Finally, when you are in town driving in stop-and-go traffic, put the windows down and turn the A/C off. 

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