If you are searching online for the question of “does car air conditioning use gasoline,” the answer is yes. Running your car’s AC unit will undoubtedly eat up some of your vehicle’s gas supply. The air conditioner gets energy from the alternator that is powered by your car’s engine. Read on to find out exactly how car AC works.

How Does Car Air Conditioning Work?

Once you understand that running car air conditioning will use gasoline, you may be wondering how this affects your gas mileage. Is that fact enough to make you stop using the AC or perhaps choose a different brand of vehicle? The tough reality for many car owners is knowing AC generally works exactly the same way in most automobiles, regardless of brand or model. When using air conditioning you are actually taking away power from the engine and using it towards the pushing of cool air throughout the car.

Every car air conditioning system runs on refrigerant, a high-pressure gas. The compressor works by turning the refrigerant into a fluid, which flows up to the condenser. The condenser then removes the heat from the refrigerant, sending the fluid to the expansion valve. There, refrigerant actually returns to its natural gaseous state. Moisture is then removed from the refrigerant and transferred to the evaporator. Heat is pulled from the air by the evaporator and the result is a cooler air flowing right through the evaporator.

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How To Save Gas While Driving

The options are pretty limited for drivers looking to save gas while using the car air conditioning. Simple solutions include turning off the air conditioning altogether and simply rolling down the windows. Or, drivers can use the fan-only setting instead of blowing cool air throughout the vehicle. Some car experts say using AC while driving at highway speeds is actually more fuel efficient than simply leaving the windows down.

So, how is that possible? Surely running the AC will be more taxing on the engine and burn up more gas than leaving a window open, right? Not so fast. When windows are left down this elevates aerodynamic drag, which causes the engine to work even harder and use more fuel. There are a few other ways to save gas, if you are intent on using the AC unit during your road trips. Tapping on the brakes gradually, not stalling for more than 30 seconds at a time and having a small amount of weight inside the car will all help save gas. Always checking to make sure your tires are properly aligned and inflated can also help save gasoline.

Our team of experts will help you in diagnosing and fixing your car AC problem as well as helping with preventative care in a timely and friendly manner. Feel free to email us any questions that you may have by using our contact us form. Automotive Diagnostic Specialties in Phoenix and Chandler does more than just AC repair we also offer general auto repair, radiator replacementauto fleet management, and RV repair. Stop by our AC Repair Shop In Chandler located at 6835 W. Chandler Blvd. Chandler, Arizona 85226 or by giving Automotive Diagnostic Specialties a call today  (480) 961-8704.