Top AC Mistakes That Are Costing You Money

In the hot San Angelo climate, your air conditioner is one of the hardest-working systems in your home. But even with the best intentions, many homeowners unknowingly make mistakes that lead to higher energy bills, reduced comfort, and costly repairs.

Here are some of the most common AC mistakes that could be draining your wallet—and how to fix them.

❌ 1. Ignoring Regular Maintenance

Just like your car, your AC needs regular maintenance to run efficiently. Skipping tune-ups can cause small issues to turn into expensive breakdowns, especially when your system is working hardest during peak summer months.

🔧 Fix: Schedule professional maintenance at least once a year—ideally before summer kicks in. Regular servicing keeps your unit running efficiently and can catch problems early.

❌ 2. Not Changing the Air Filter

A dirty air filter restricts airflow, forces your AC to work harder, and reduces indoor air quality. This is one of the easiest and most overlooked ways people waste money on cooling.

🗓️ Fix: Replace your air filter every 1–3 months, or more often if you have pets or allergies.

❌ 3. Setting the Thermostat Too Low

Setting your thermostat super low doesn’t cool your home faster—it just makes your system run longer. That wastes energy and puts unnecessary strain on your AC.

🌡️ Fix: Set your thermostat to a comfortable, efficient temperature—typically around 76–78°F when you’re home, and higher when you're away.

❌ 4. Cooling an Empty House

Running your AC all day when no one’s home leads to unnecessary energy use and higher bills.

🕒 Fix: Install a programmable or smart thermostat so your system only runs when needed. You can even adjust it remotely from your phone.

❌ 5. Blocking Vents or Returns

Placing furniture or rugs over your vents can choke off airflow, forcing your AC to work harder to cool your home evenly.

🛋️ Fix: Keep vents and return air grilles clean and unobstructed in every room to maintain balanced airflow.

❌ 6. Skipping Duct Inspections

Leaky or poorly insulated ductwork can waste up to 30% of your cooled air before it even reaches your living space. That means your AC works overtime to maintain the temperature.

🔍 Fix: Have your ductwork inspected and sealed if necessary—especially in older homes or if certain rooms are always too warm.

❌ 7. Leaving Windows or Doors Open

Even small air leaks around doors and windows can force your AC to run longer and harder to maintain a consistent temperature.

🚪 Fix: Seal any gaps with weatherstripping or caulk, and keep doors and windows closed when the AC is running.

❌ 8. Installing the Wrong-Sized Unit

A system that's too small won’t cool your home properly, and one that’s too large will short-cycle, wasting energy and wearing out faster.

📏 Fix: Always consult an HVAC professional to ensure your AC unit is properly sized for your home’s square footage, insulation, and layout.

❌ 9. Relying Only on AC to Cool Your Home

Your AC shouldn’t be the only tool you use to stay cool. If your home traps heat or lacks proper ventilation, your system will have to work overtime.

🌬️ Fix: Use ceiling fans, close blinds during peak sunlight, and improve insulation to reduce your reliance on AC.

❌ 10. Waiting Too Long to Call for Repairs

Strange noises, weak airflow, or inconsistent temperatures are all signs your system needs attention. Waiting can turn a minor issue into a major (and expensive) one.

🛠️ Fix: Don’t ignore warning signs. Call a professional at the first sign of trouble to save money and prevent a full breakdown.

✅ Save Money, Stay Comfortable

Avoiding these common AC mistakes can save you money every month and extend the life of your system. With a little attention and some smart habits, you can stay cool all summer—without breaking the bank.

📞 Think your AC might be working harder than it should?

❄️ Contact Us Today! Let’s make sure your system is running at peak efficiency.