Carnes and Sons Air Conditioning - San Antonio's Professional HVAC Repair
401 E Sonterra Blvd Ste 375, San Antonio, TX 78258
Q&A
My AC in San Antonio turns on and off constantly. What's causing this short cycling?
Short cycling is often caused by an oversized unit, a dirty air filter restricting airflow, or a malfunctioning thermostat. In our climate, it can also be due to low refrigerant from a leak, causing the system to overheat and shut down prematurely. Our technicians will diagnose the root cause to prevent the extra wear and tear and high energy bills this issue creates.
My house isn't cooling like it used to. Could it be a refrigerant leak?
Yes, a refrigerant leak is a common issue here that significantly reduces cooling capacity. You might notice warm air from vents, longer run times, or ice on the refrigerant lines. We use specialized electronic leak detectors to find even small leaks. We then repair the leak and recharge the system to the manufacturer's exact specification, ensuring safe, efficient operation.
What does your AC repair service include for these common San Antonio problems?
Our repair service is a full diagnostic and solution process. For short cycling, we check system pressure, thermostat calibration, electrical components, and airflow. For suspected leaks, we perform a thorough leak test, make the necessary repair, and then evacuate and recharge the system. We always explain the issue, provide a clear estimate, and ensure your system is running efficiently for our local weather.
About the Company
For decades, Carnes and Sons Air Conditioning has been San Antonio's trusted local HVAC specialist. We understand the unique demands the Texas heat puts on cooling systems. Our expert technicians frequently diagnose and resolve common local issues like short cycling, which wastes energy and strains your unit, and refrigerant leaks that drastically reduce your home's cooling capacity. We provide comprehensive service, from precise leak detection and EPA-compliant refrigerant handling to system adjustments and repairs that restore efficiency and comfort. As a family-owned business, we're committed to keeping San Antonio homes cool with reliable, honest service you can count on.
Services Offered
- HVAC installation or replacement
- HVAC system repair
Business Location & Hours
| Mon: | 7:00 AM - 11:00 PM |
| Tue: | 7:00 AM - 11:00 PM |
| Wed: | 7:00 AM - 11:00 PM |
| Thu: | 7:00 AM - 11:00 PM |
| Fri: | 7:00 AM - 11:00 PM |
| Sat: | 7:00 AM - 11:00 PM |
| Sun: | 7:00 AM - 11:00 PM |



















