Sr.HVAC Service Tech

Kelso Building Services; Houston (TX); On-site; USD 55,000 - 62,000; Full time

Benefits offered by this job

Company vehicle

Tools provided

Health, dental, vision

Retirement plan

PTO and holidays

Training and advancement opportunities

Job summary

Kelso Building Services seeks an experienced HVAC Journeyman Technician to service large commercial/industrial facilities in Houston and San Antonio. You'll diagnose, repair, and optimize chillers, cooling towers, pumps, boilers; perform preventative maintenance; interpret schematics; document work; communicate with customers; uphold safety and EPA standards.

Requires Active Texas TDLR Journeyman License, EPA 608, 5+ years with heavy chillers, BAS/DDC controls, electrical troubleshooting, and a

Qualifications

• Active Texas HVAC Journeyman license required (TDLR).
• EPA 608 Universal Certification is mandatory.
• 5+ years of commercial HVAC experience with large chillers.
• Experience with BAS/DDC controls platforms.
• Strong electrical troubleshooting across LV/HV systems.
• Valid Texas driver’s license in good standing.

Responsibilities

• Diagnose and repair large tonnage chillers (air- and water-cooled).
• Commission and start up chiller and controls systems for peak efficiency.
• Identify and resolve electrical, mechanical, and controls issues.
• Perform preventative maintenance on chillers, towers, pumps, boilers.
• Interpret blueprints, wiring diagrams, and control schematics.
• Maintain accurate service documentation and recommendations.
• Communicate system conditions and next steps to customers.
• Adhere to safety, EPA standards, and company policies.
• Provide guidance to apprentices and junior technicians when applicable.

Skills

HVAC troubleshooting

Electrical troubleshooting

Independent work

Safety compliance

Customer communication

Mentorship (apprentices)

Education

TDLR HVAC Journeyman License (Texas)

EPA 608 Universal Certification

Tools

BAS/DDC controls

Job description

Job Summary

We're looking for experienced HVAC Journeymen Technicians with deep expertise in a variety of commercial HVAC systems to join our service team. In this role, you'll handle complex diagnostics, repairs, preventative maintenance, and system optimization across large commercial and industrial facilities. The right candidate brings strong technical instincts, a safety-first mindset, and a track record of delivering quality service. We are looking for technicians to support the Houston and San Antonio markets.

Key Responsibilities

• Diagnose and repair large tonnage chillers — air-cooled and water-cooled — including centrifugal, screw, and scroll configurations.
• Commission and start up chiller and controls systems, optimizing for peak efficiency.
• Identify and resolve electrical, mechanical, and controls-related issues.
• Conduct scheduled preventative maintenance on chillers, cooling towers, pumps, boilers, and supporting equipment.
• Interpret blueprints, wiring diagrams, and control schematics.
• Keep accurate, timely documentation of all service work, repairs, and recommendations.
• Communicate clearly with customers about system conditions, findings, and next steps.
• Adhere to all safety requirements, EPA standards, and internal company policies.
• Provide guidance and mentorship to apprentices and junior technicians when applicable.

Required Qualifications

• Active TDLR HVAC Journeyman License (Texas).
• EPA 608 Universal Certification.
• 5 or more years of commercial HVAC experience with significant exposure to heavy chiller systems.
• Demonstrated experience with BAS/DDC controls platforms.
• Strong electrical troubleshooting capability across both low and high voltage systems.
• Comfortable working independently with limited oversight.
• Valid Texas driver's license in good standing.
• Ability to lift 50 lbs and operate in mechanical rooms, rooftops, and confined spaces.

Preferred Qualifications

• Factory certifications or formal training on major chiller manufacturers.
• Hands-on controls programming or commissioning background.
• Prior experience in hospitals, industrial plants, or large-scale commercial buildings.

What We Offer

• Pay based on experience and qualifications up to $45/hr.
• Company vehicle, tools, and field technology provided.
• Health, dental, vision, and retirement benefits.
• PTO and paid company holidays.
• Continued training and advancement opportunities.