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Job Title: Commercial HVAC Service Technician
Job Location: San Antonio TX 
Operating Company: Mechanical Reps Inc. 
FLSA Status: Non-Exempt 
Pay Range: $38-45/hour
About:  
Mechanical Reps Inc - A member of the AIR Control Concepts family.  
Mechanical Reps Inc. is the premier manufacturers' representative for HVAC products in Central and South Texas. Founded in 1974, our team provides exceptional products and an unprecedented level of service. Mechanical Reps Inc. serves engineers, contractors, and facility managers who demand responsiveness and expertise. 
We are proud of our long-lasting relationships with leading product manufacturers, but we understand that our real product is service. Uncompromising dedication to our customers is our greatest strength. 
Check out our website: home | Mechanical Reps 
Job Description: 
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 for Mechanical Reps (MRi), a leading HVAC equipment representative.
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.
Essential Duties and Responsibilities:  
Field Service & Maintenance

• Perform service, preventative maintenance, inspections, and overhauls on 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

• 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
• OEM certifications preferred (Trane, Carrier, York, Daikin, or equivalent)

• 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
• HVAC controls experience is a plus (BAS, DDC, BACnet, Modbus, etc.)

• 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

• Health & Wellness – Medical, dental, vision, and life insurance coverage to support your well-being. 
• Financial Security – 401(k) retirement plan with company match and short/long-term disability coverage. 
• Work-Life Balance – Paid time off (PTO), paid holidays, and an employee assistance program (EAP). 
• Professional Development – Ongoing training opportunities and support for continuing education.
• Company Vehicle and Fuel Card 

 
The Company provides equal employment opportunity in accordance with applicable laws and prohibits discrimination and harassment. Employment decisions are based on business needs and qualifications.   
The Company complies with disability laws and provides reasonable accommodations to qualified individuals. 

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