Does Car AC Use Gas?

As temperatures rise in Indiana, it’s common for Indianapolis drivers to wonder, “Does car AC burn gas?” Yes, a vehicle’s air conditioning system does use fuel to operate. While the AC itself is powered by the engine’s compressor, which runs on gasoline, the amount of fuel used is typically small. Still, understanding how your AC system affects fuel efficiency can help you make smarter driving decisions around Avon. Read on to learn more, and if you have questions or need AC service in Lafayette, our service technicians are here to help!

How Does Car AC Work? 

Essentially, the air conditioning system works the same for all cars, regardless of OEM. The AC runs on refrigerant, which is a high-pressure gas. All AC systems use the following components to operate: 

• Compressor — compresses the refrigerant into a fluid, allowing flow down a line to the condenser. 
• Condenser — eliminates the heat from the refrigerant and moves it to the expansion valve or orifice tube. 
• Expansion valve or orifice tube — changes the refrigerant back to its gaseous state, then transfers the gas to the receiver/drier or accumulator. 
• Receiver/drier or accumulator — removes moisture from the refrigerant and sends it to the evaporator. 
• Evaporator — takes the heat out of the air passing through its core, then sends it into the refrigerant, which results in cold air flowing beyond the evaporator. 

Can Using Car AC Be Fuel-Efficient? 

When you’re driving at highway speeds, using your car’s AC is more efficient than opening the windows. Why? Because the open windows create more drag, which causes the engine to work harder and use more fuel. So, if you’re cruising down the highway on a hot summer day, you can crank the AC and feel good about it, because you’re reducing aerodynamic drag. 

Other Tips for Improving Fuel Efficiency

In addition to using the AC on the highway, there are other ways you can give your car’s fuel economy a little boost:

• Brake gradually 
• Keep the tires properly inflated and aligned 
• Avoid idling for over 30 seconds 
• Don’t overload your car 
• Use sun reflectors if you’re parked in the sun 
• Buy the recommended oil for your car 
• Reduce your speed and drive in a higher gear 

Schedule AC Service at Lafayette Volkswagen

Now that we’ve confirmed your car AC does use gas, do you have any other service-related questions? Connect with us online or give us a call at (765) 257-2941 today. If you’re having issues with your AC, don’t hesitate to schedule an appointment at our service center near Noblesville.