Your car’s air conditioning system is one of those modern luxuries you don’t appreciate—until it stops working. Unfortunately, there’s a lot of misinformation floating around about how A/C systems operate, how to maintain them, and when they need repairs.
Today, we’re busting five common car A/C myths so you can stay cool, save money, and avoid unnecessary repairs. And if your A/C isn’t performing like it should, Hillside Auto Repair is here to help—with expert diagnostics, top-tier service, and a nationwide 3-year/36,000-mile warranty on all our work.
Myth #1: "You Only Need to Service Your A/C If It Stops Blowing Cold Air”
Fact: Waiting until your A/C completely fails is a costly mistake.
Just like your engine needs oil changes, your A/C system benefits from regular maintenance. Over time, refrigerant levels drop, seals dry out, and contaminants build up—long before you notice weak cooling. A proactive A/C check can catch small leaks, failing components, or low refrigerant before they turn into a $1,000 compressor replacement.
Myth #2: “Recharging Your A/C Is a Quick DIY Fix”
Fact: Unless you’re EPA-certified, you shouldn’t touch refrigerant.
Those $20 recharge kits at the auto store? Big risk, little reward. Refrigerant requires precise handling—too much or too little can damage your compressor or cause leaks. Plus, if your A/C is low on refrigerant, there’s already a leak that needs professional diagnosis. At Hillside Auto Repair, we use factory-grade equipment to recharge your system correctly—the first time.
Myth #3: “Running the A/C Wastes Fuel”
Fact: Modern A/C systems are far more efficient than they used to be.
While it’s true that A/C use slightly impacts fuel economy (about 1-4 MPG), driving with windows down at highway speeds creates drag, which can be just as inefficient. The comfort trade-off is worth it—especially in scorching summer heat.
Myth #4: “You Should Run the A/C on Max All the Time to Keep It Working”
Fact: Overusing max A/C can actually strain the system.
Max A/C (recirculate mode) is great for quick cooling, but running it constantly can trap humidity, leading to musty smells and mold growth. Instead, alternate between fresh air and recirculate modes to keep airflow balanced. And don’t forget to replace your cabin air filter—a clogged filter makes your A/C work harder.
Myth #5: “If the A/C Works, the Compressor Is Fine”
Fact: A failing compressor can still blow cold air—until it suddenly doesn’t.
Your A/C compressor is the heart of the system, and like any mechanical part, it wears out over time. Warning signs include:
- Unusual noises (grinding, squealing)
- Inconsistent cooling
- Visible leaks near the compressor
If you notice any of these, get it checked before it fails completely—because a dead compressor means no cold air AND a hefty repair bill
Keep Your Cool with Hillside Auto Repair
At Hillside Auto Repair, we specialize in A/C diagnostics, repairs, and maintenance—all backed by our nationwide 3-year/36,000-mile warranty. Whether you need a refrigerant recharge, leak detection, or full system repair, we’ve got you covered.
Don’t let A/C myths leave you sweating this summer—schedule a check-up today and enjoy ice-cold air all season long.
After all, life’s too short for hot air—unless it’s coming from your car’s exhaust. 😉 Stay cool! ❄️🚗