Rafael Mendoza

Diagnose and repair 12–18 residential/light-commercial calls per week (split systems, heat pumps, RTUs, package units). Cut callback rate to under 4% by documenting root cause, parts used, and preventive recommendations on every ticket. Mentor two apprentice techs on refrigerant recovery, electrical troubleshooting, and load-calc basics. Partner with dispatch to prioritize no-cool emergencies during monsoon heat waves; average response under 90 minutes for VIP accounts.

Assisted senior techs on 800+ service and maintenance visits; progressed to independent residential calls within 14 months. Performed seasonal tune-ups that improved system efficiency 8–15% for repeat customers. Maintained van inventory accuracy above 98% and reduced emergency parts runs.

Supported preventive maintenance on rooftop units and exhaust fans across three retail properties. Logged work orders in CMMS and coordinated vendor visits for major compressor replacements.

OSHA 10 Construction.

Refrigerant handling, recovery, charging, heat-pump diagnostics, safety, and code-compliant service practices.