Commercial HVAC Service Technician

AIR Control Concepts•San Antonio, TX

55d•$38 - $45•Onsite

About The Position

Mechanical Reps Inc., a member of the AIR Control Concepts family, is the premier manufacturers' representative for HVAC products in Central and South Texas. Founded in 1974, the team provides exceptional products and an unprecedented level of service to engineers, contractors, and facility managers. We are seeking a highly skilled Combination HVAC Start-Up & Service Technician to join our field service team. This dual-function role combines commercial/industrial HVAC service with dedicated equipment start-up support. In the service capacity, the technician is responsible for the installation, maintenance, troubleshooting, and repair of large-scale HVAC systems across commercial and light industrial facilities. In the MRi start-up capacity, this individual conducts field installation verifications, performs factory start-ups, delivers owner training, and executes warranty work for the equipment MRi sells. The ideal candidate brings strong mechanical, electrical, and controls expertise and thrives both working independently on service calls and collaborating with the MRi start-up team on new equipment commissioning. Experience with HVAC controls is a plus.

Requirements

5–7+ years of commercial/industrial HVAC experience
Demonstrated experience performing preventative maintenance, annuals, and major equipment repairs
Hands-on experience with HVAC equipment start-up, commissioning, or factory-authorized procedures preferred.
High School Diploma or GED required
EPA Universal Certification (608) required
Strong knowledge of HVAC systems, refrigeration cycles, and hydronic systems
Experience with cooling towers and condenser systems
Experience with pumps, motors, and piping systems
Experience with VFDs and building automation / controls systems
Experience with airside systems: VAV, AHU, RTU
Ability to read blueprints, schematics, wiring diagrams, and technical documents
Proficiency with diagnostic tools and service software
Valid Driver's License with clean driving record
Must be insurable under company vehicle policy
Ability to participate in an on-call rotation
Commitment to safety, compliance, and continuous training
Strong troubleshooting and problem-solving skills across mechanical, electrical, and controls disciplines
Excellent written and verbal communication — able to interface with owners, contractors, and manufacturers
Ability to work independently in the field and as part of a collaborative start-up team
Customer-focused mindset with a professional demeanor
Adaptable to varied project types: routine service calls through complex new equipment commissioning
Ability to lift, push, or pull up to 50 lbs
Ability to climb ladders, work on rooftops, and in confined spaces
Capable of standing, crawling, and working in various weather conditions
Safe operation of vehicles, lifts, and mechanical equipment

Nice To Haves

Experience with HVAC controls is a plus
Hands-on experience with Rheem RTU's is a plus.
OEM certifications preferred (Trane, Carrier, York, Daikin, or equivalent)
HVAC controls experience is a plus (BAS, DDC, BACnet, Modbus, etc.)

Responsibilities

Perform service, preventative maintenance, inspections, and overhauls on RTUs, boilers, pumps, motors, VFDs, AHUs, FCUs, cooling towers, and HVAC systems
Diagnose and troubleshoot electrical, mechanical, and control system issues
Repair and replace defective components.
Perform refrigerant handling in full compliance with EPA regulations
Conduct advanced diagnostics, pipefitting, brazing, and system repairs
Analyze system data, trends, and control performance for optimization
Download and configure system programs and controllers
Conduct field installation verifications to confirm equipment is properly installed prior to start-up
Perform factory start-up procedures for equipment sold by Mechanical Reps (MRi), including Pumps, Boilers, Fans, Variable Frequency Drives, Cooling Towers, Air Handling Units, DOAS Units, Packaged Rooftop Units, VRF Systems, and Humidifiers.
Troubleshoot commissioning issues in coordination with the MRi start-up team and equipment manufacturers
Deliver owner/operator training on new equipment — covering proper operation, maintenance schedules, and control interfaces
Execute warranty service and repairs for MRi-represented equipment within the warranty period
Serve as a knowledgeable field liaison between MRi, installing contractors, and end customers
Build strong customer relationships and communicate service findings and start-up results clearly
Educate customers on system operation and maintenance best practices
Mentor and support junior technicians; assist in training and development
Coordinate work on larger projects and lead multi-technician jobs
Complete service documentation, start-up reports, and time tracking accurately and on time
Adhere to OSHA, company safety standards, and jobsite hazard assessments
Maintain service vehicle, tools, and inventory
Participate in on-call rotation as required