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Claim This BusinessCornerstone AC & Refrigeration LLC operates in Los Fresnos, Texas, delivering air conditioning repair to Cameron County residents. The business maintains a perfect 5.0-star rating from two client reviews, reflecting consistent service quality. Homeowners throughout the Los Fresnos area rely on this contractor for climate control repairs and system maintenance.
This contractor distinguishes itself through dedicated technician relationships, with customers directly naming the professionals who serve them. The team responds to service calls even on major observation weekends, demonstrating commitment to client convenience. All work includes thorough explanations of diagnostic findings and repair procedures, leaving clients confident in their system is operating correctly.
Reviewers highlight Carlos responding on Super Bowl Sunday to diagnose a non-operational system, walking the homeowner through each repair step with clarity and care. When a compressor failed on another property, Gilbert handled the replacement with same professionalism, completing the work while maintaining a clean workspace. Both technicians returned to educate clients on new equipment operation, an approach that builds long-term homeowner confidence.
Two verified reviews yield a 5.0 average rating with both clients awarding full stars. Both testimonials name specific technicians (Carlos and Gilbert) and describe distinct repair scenarios: same-day holiday response and compressor replacement. Zero negative mentions appear in available feedback.
| Sunday | 9 AM–5 PM |
| Monday | 9 AM–5 PM |
| Tuesday | 9 AM–5 PM |
| Wednesday | 9 AM–5 PM |
| ThursdayToday | 9 AM–5 PM |
| Friday | 9 AM–5 PM |
| Saturday | 9 AM–1 PM |
Complete system evaluation identifying cooling failures, electrical issues, and refrigerant problems with clear explanations.
Major component replacement for failed compressors, handled professionally with proper equipment handling.
Seasonal maintenance ensuring system efficiency and preventing unexpected failures during peak summer heat.
Refrigeration system repairs addressing cooling loss and mechanical failures in cooling equipment.
Evaluation of system air quality performance and recommendations for improved home comfort.
Rapid response availability for Saturday and Sunday calls, including holiday weekend emergency service.
Post-install guidance helping homeowners understand and operate new climate control equipment.