Common HVAC Questions
Answered for South Texas Homes
Straightforward answers to help you keep your home comfortable, efficient, and ready for the Coastal Bend climate.
Living in Corpus Christi and the Coastal Bend comes with unique challenges:
high humidity, salt air, and long cooling seasons.
We’ve put together answers to the most common HVAC questions we hear from homeowners in South Texas so you can make informed decisions about your system, your comfort, and your home.
1. How often should I change my air filters in Corpus Christi?
In our humid, pollen-heavy coastal climate, change standard 1-inch filters every 30–60 days, 2-inch filters every 60–90 days, and 4–5 inch filters every 4–6 months.
If you have pets, allergies, or live near the coast, monthly changes are recommended. Dirty filters restrict airflow, increase humidity, and reduce air quality.
2. How often should I schedule professional HVAC maintenance?
We recommend twice per year — once in spring and once in fall.
Coastal air can cause corrosion, and high humidity can clog drain lines quickly. Regular maintenance helps your system run efficiently and last longer.
3. What size AC unit do I need for my home?
Proper sizing depends on more than square footage. We evaluate insulation, windows, layout, and climate using a Manual J load calculation.
Oversized units won’t remove humidity properly, and undersized units will struggle in the heat.
4. Should I replace both indoor and outdoor units at the same time?
In most cases, yes.
Mismatched systems reduce efficiency, can cause early failure, and may void warranties. Replacing both ensures proper performance and humidity control.
5. How long do HVAC systems last in Corpus Christi?
Typically 10–15 years due to salt air and humidity (shorter than inland areas).
Regular maintenance, coil cleaning, and proper care can help extend system life.
6. Why is humidity such a big issue here?
High humidity makes your home feel hotter and can lead to mold and discomfort.
Solutions include:
Variable-speed systems
Whole-home dehumidifiers
Sealed ductwork
Proper insulation
We can evaluate your home and recommend the best setup.
7. What are signs my HVAC system needs repair?
Call us if you notice:
Weak or warm airflow
Strange noises
Frequent cycling
High energy bills
Musty smells or leaks
Uneven temperatures
Problems escalate quickly in this climate; don’t wait.
8. How can I lower my energy bills?
Change filters regularly
Keep outdoor unit clear
Use a smart thermostat (78°F recommended)
Seal leaks
Schedule maintenance
Upgrade to high-efficiency equipment
9. Do I need a permit for HVAC work in Corpus Christi?
Yes, most installations and major repairs require permits.
We handle all permitting and inspections for you.
10. Should I cover my outdoor AC unit in winter?
No. Covering it traps moisture and can cause corrosion.
Keep it clean and clear instead.
11. What makes Gibson’s different?
We’re a local, owner-operated company that focuses on doing the job right the first time.
We pay attention to the details, offer fair pricing, and treat every home with respect. You’re dealing directly with someone who stands behind the work.
❄️ Let’s Keep You Comfortable
Whether you need a quick A/C fix, a new heating system installation, or routine maintenance to keep things running smoothly, Gibson’s Air Conditioning & Heating is here to help.