A/C Repair in San Marcos, TX

About This Service

Complete auto A/C diagnostics and repair in San Marcos. We solve all cooling issues from refrigerant leaks and electrical faults to compressor problems. Fast root-cause fixes restore powerful cold air and maximum system efficiency for comfortable driving.

A/C problems range from refrigerant leaks and failed compressor clutches to clogged expansion valves, faulty pressure switches, and blend door actuator failures. We use electronic leak detection, manifold gauge sets, and scan tool data to pinpoint the root cause rather than just recharging a leaking system. Once the fault is identified, we repair or replace the failed component and verify system performance with a post-repair temperature test.

• Electronic leak detection and manifold gauge diagnosis
• Compressor, condenser, evaporator, and expansion valve repair
• Blend door actuator and pressure switch replacement
• Post-repair temperature verification at the vents

At Riley Auto Care & Transmissions, we've been serving drivers in San Marcos and throughout Central Texas since 1978. Our certified technicians use the latest diagnostic equipment and quality parts to get your vehicle back on the road right the first time.

We'll give you an honest assessment and a clear written estimate before any work begins. No surprises — just straightforward service you can trust.