Rafael Campos

• Lead diagnostics and repair for 3545 rooftop units, split systems, and VRF installations across 12 commercial sites, sustaining 98% first-visit resolution. • Coordinate preventive-maintenance routes and heat-wave response, reducing emergency callbacks 22% year over year. • Commission refrigerant circuits, economizers, VFDs, and building controls; document readings and code-compliant closeout in ServiceTitan. • Coach four technicians on lockout/tagout, EPA 608 practices, airflow testing, and customer-ready job reports.

• Supervised a six-person field crew handling residential change-outs and commercial service calls for 80+ weekly work orders. • Diagnosed compressor, blower, electrical, and airflow faults on split systems and rooftop units, improving on-time completion to 96%. • Built seasonal PM checklists and trained apprentices on brazing, evacuation, refrigerant recovery, and safe ladder practices. • Earned repeat business by explaining repair options clearly and maintaining accurate estimates, photos, and warranty notes.

Serviced residential heat pumps, split systems, and package units for 20–25 daily calls while maintaining strong safety and customer-satisfaction scores. • Installed and started up more than 50 condensers, air handlers, and smart thermostats; verified airflow, superheat, subcooling, and electrical loads. • Used digital manifold gauges, combustion analyzers, and wiring diagrams to isolate faults and complete accurate repairs on the first visit. • Maintained clean work areas, explained maintenance plans, and recorded parts, readings, and warranty details for every customer.

Completed hands-on training in refrigeration cycles, electrical controls, airflow, brazing, evacuation, and preventive maintenance. EPA Section 608 Universal certified; OSHA 10 Construction certified.