How to Maximize the Cool: 5 Pro Tips for Getting the Most Out of Your Car's A/C

As the summer heat rolls into Alton, IL, your vehicle's air-conditioning system becomes more than a luxury—it’s essential. At Rister’s Automotive & Transmissions, we know how uncomfortable and even dangerous a hot car can be. If your A/C feels like it’s struggling to keep up, a few expert tips can help your system cool more efficiently, save fuel, and last longer.

Here’s how to make sure your A/C system keeps you cool when it matters most:

1. Park Smart to Start Cool

Parking in the shade or using a sunshade can make a huge difference in how quickly your car cools down. When your vehicle starts cooler, the A/C doesn’t have to work as hard. If it’s already warm inside, roll down your windows for a few moments before turning on the A/C to let the hot air escape.

2. Use the Recirculate Setting

Your A/C will cool faster and more efficiently when set to recirculate. This mode reuses the cooler air inside your cabin instead of pulling in hot, humid air from outside. Once your cabin temperature hits a comfortable level—say, around 72°F—the A/C won’t have to work overtime to maintain it.

3. Skip the Pre-Cooling Routine

Many drivers are tempted to let the car “cool off” before getting in. However, running your A/C while parked is inefficient. Your A/C performs best when there’s airflow created by driving. Next time, hop in and get moving—the system will cool faster once you're on the road.

4. Change Your Cabin Air Filter Regularly

A clogged cabin air filter can significantly reduce airflow, putting extra strain on your A/C system. Most vehicles require a new cabin air filter every 15,000–20,000 miles, but always check your owner's manual for specifics. At Rister’s Automotive, we inspect and replace filters as part of our routine maintenance services.

5. Don’t Ignore Refrigerant Leaks

One common misconception is that A/C systems naturally lose refrigerant over time. In reality, if your system isn’t cooling properly, it could be a leak or another issue. Low refrigerant levels not only hurt performance but can damage the system over time. Our team at Rister’s Automotive can inspect and recharge your A/C, and if needed, perform any necessary repairs to keep you cool and safe.

Stay Comfortable with Expert A/C Service in Alton, IL

When your car’s A/C isn’t keeping up with the heat, don’t sweat it—bring it to Rister’s Automotive & Transmissions. Our certified technicians are here to help you stay cool with honest diagnostics, reliable service, and quick turnaround times.

Call us today or schedule an appointment online at ristersauto.com.