
Corpus Christi is known for its beautiful coastal views—and its sweltering summer heat. When temperatures soar into the high 90s or beyond, it’s no surprise that your air conditioning system works overtime. But if your AC runs nonstop in Corpus Christi, even on milder days, there may be underlying issues that need attention. Understanding the causes and learning how to address them can save you money, improve comfort, and extend the life of your HVAC system.
At Justice Inc., one of the top air conditioning and heating companies in Corpus Christi, we’ve helped countless homeowners tackle this exact problem. Here’s what you need to know.
1. Improper System Sizing
One of the most common reasons your AC runs nonstop in Corpus Christi is due to incorrect system sizing. Bigger isn’t always better.
Oversized Systems
An oversized air conditioner cools your home too quickly and shuts off before completing a full cycle. This leads to poor humidity control, frequent stops and starts, and uneven cooling. Ironically, it might feel like your system is constantly running because it cycles so often.
Undersized Systems
More commonly, Corpus Christi homeowners deal with undersized systems. These units struggle to meet your cooling needs, especially during extreme heat. They keep running because they never quite reach the set temperature.
Justice Inc. offers professional load calculations to ensure your AC unit is perfectly sized for your home’s square footage, insulation, window placement, and other critical factors.
2. Poor Insulation and Air Leaks
Even a properly sized unit can struggle if your home can’t hold in the cool air it produces. Homes in Corpus Christi, especially older ones, often have insufficient insulation or leaky ductwork.
Why Insulation Matters
Insulation acts like a thermal barrier. Inadequate insulation allows outdoor heat to seep in, forcing your AC to work harder. Attics and walls are key areas to check.
Air Leaks and Duct Issues
Gaps around windows, doors, and unsealed ducts let conditioned air escape and hot air in. This constant exchange makes it almost impossible for your AC to reach and maintain your desired temperature.
A quick energy audit from Justice Inc. can reveal where your home is losing energy and help you prioritize upgrades that reduce AC runtime and energy bills.

3. Incorrect Thermostat Settings or Malfunctions
Your thermostat is the brain of your HVAC system. If it’s set incorrectly or not functioning properly, it can cause your AC to run nonstop in Corpus Christi heat.
Settings to Check:
- Fan setting: If set to “ON” instead of “AUTO,” the fan will run continuously, even when cooling isn’t needed.
- Temperature setting: Setting the thermostat too low (e.g., 68°F in a hot climate) can cause the AC to run excessively.
- Location: If your thermostat is near a heat source or in direct sunlight, it may get false readings and trigger unnecessary cooling cycles.
A programmable or smart thermostat installed by Justice Inc. can help optimize your cooling schedule, avoid constant cycling, and improve efficiency year-round.
4. Dirty Air Filters or Coils
Regular maintenance is key to AC performance. A clogged filter or dirty evaporator coil restricts airflow, making the system work harder and run longer.
Easy Fixes Include:
- Replacing filters every 1-3 months
- Scheduling seasonal maintenance to clean coils and inspect components
Justice Inc. offers comprehensive maintenance plans that keep your system running efficiently and catch problems before they lead to bigger repairs.
5. Extreme Corpus Christi Climate
Let’s not ignore the obvious: Corpus Christi summers are intense. Long periods of high humidity and heat naturally make AC systems work harder. But that doesn’t mean they should run nonstop.
If your system runs continuously but still doesn’t cool your home effectively, it’s worth having it inspected by a professional.
Justice Inc. has decades of experience helping Corpus Christi residents beat the heat with reliable HVAC solutions tailored to the local climate.

What You Can Do About It
To prevent your AC from running nonstop in Corpus Christi, consider these steps:
- Get a professional system sizing check from Justice Inc.
- Upgrade your home’s insulation and seal air leaks
- Install a smart thermostat and set it to a realistic temperature (around 76–78°F)
- Change filters regularly and schedule seasonal maintenance
- Ask for an energy audit to uncover hidden efficiency issues
Call Justice Inc. for Help with Your AC in Corpus Christi
If you’re tired of high energy bills, constant AC noise, or uneven cooling, it’s time to take action. At Justice Inc., Corpus Christi’s trusted AC repair and installation experts, we’ll diagnose the problem and offer smart, energy-saving solutions tailored to your home.
Don’t let your AC run endlessly this summer. Contact Justice Inc. today and experience the comfort you deserve.