Boiler Technician

Thermal Tech Inc.; Jacksonville (TX); On-site; USD 65,000 - 90,000; Full time

Job summary

Thermal Tech Inc. in Florida seeks an experienced Boiler Technician specializing in controls, instrumentation, and combustion systems to diagnose faults, tune burners, commission systems, and perform preventive maintenance.

You will work in the field, document work in NetSuite, coordinate with service parts and sales, and ensure safety and reliability on mid-sized commercial and industrial boiler installations. A valid driver's license and ability to pass background checks required.

Qualifications

• High School diploma required.
• 3+ years of field experience preferred (boiler industry, HVAC, or electrical controls).
• Strong troubleshooting ability — able to diagnose issues, not just replace parts.
• Working knowledge of boiler room equipment, combustion testing equipment, PLC programs and control systems.

Responsibilities

• Inspect, test, calibrate, and replace electrical control components.
• Diagnose electrical faults across boiler control circuits using multimeters.
• Tune burner management systems and perform combustion analysis to optimize efficiency.
• Perform scheduled electrical preventive maintenance on boiler control systems.
• Execute electrical commissioning on new installations and post-repair boiler systems.
• Document all work, parts, and notes in NetSuite mobile.
• Coordinate with service, parts, and sales teams in the field.

Skills

Troubleshooting

Customer service

Time management

Communication

Field experience

Education

High School diploma

Tools

Multimeters

Electrical schematics

PLC systems

Combustion analysis equipment

Control panels & diagrams

Job description

We are seeking an experienced Boiler Technician with deep expertise in controls, instrumentation, and combustion systems. This role centers on the electrical side of boiler service — diagnosing faults, tuning burners, commissioning systems, and keeping equipment running safely through disciplined preventive maintenance

Job Requirements (What You’ll Do)

• Control & Instrumentation
  • Inspect, test, calibrate, and replace electrical control components.
• Electrical Troubleshooting
  • Diagnose electrical faults across boiler control circuits using multimeters.
  • Trace wiring issues, identify failed components, and resolve intermittent faults systematically.
  • Read and interpret electrical schematics, ladder diagrams, and control panel drawings to isolate root causes quickly and accurately.
• Burner management & Combustion Tuning
  • Service and maintain burner management systems and flame safeguard controllers (Honeywell, Fireye, Siemens, Cleaver-Brooks, and similar).
  • Perform combustion analysis using flue gas analyzers. Tune air-to-fuel ratios across the full firing range to optimize efficiency, minimize emissions, and maintain safe operation.
  • Adjust and verify modulation control, high/low fire setpoints, and burner sequencing.
• Preventative Maintenance
  • Perform scheduled electrical PM tasks on all boiler control systems.
  • Conduct annual safety device testing including low-water cutoff, high-limit, and flame failure response per code and insurance requirements.
• Startups
  • Execute electrical commissioning on new installations and post-repair boiler systems. Verify wiring, confirm control power, and test all interlocks and safety devices prior to first fire.
  • Confirm proper sequencing, safety shutdown function, and setpoint configuration. Perform and document initial combustion analysis at startup.
• Document all work, parts, and notes in NetSuite mobile.
• Work independently in the field while coordinating with the service, parts, and sales team.

Experience & Qualifications

• High School diploma required
• 3+ years of field experience preferred (boiler industry, HVAC, or electrical controls)
• Strong troubleshooting ability — able to diagnose issues, not just replace parts
• Working knowledge of:
  • Boiler room equipment and steam systems
  • Combustion testing equipment
  • Parallel positioning systems and controllers
  • Electrical systems, test equipment, and conduit installation
  • PLC programs and control systems
• Ability to manage time, prioritize work, and adapt in the field
• Strong customer service skills and professional communication
• Valid driver’s license required with acceptable motor vehicle record
• Ability to pass background check and drug screening

Work Environment & Expectations

• Flexibility to work overtime, nights, or weekends when needed
• Participation in an on-call rotation for emergency service
• Ability to handle multiple priorities while maintaining accuracy and safety standards

At Thermal Tech Inc, our core values—Customer Driven & Focused, Respect for People and Policy, and Doing the Right Thing—define who we are and guide everything we do. Our purpose is “Helping the Customer Remove the Worry,” targeting medium to large commercial and industrial customers who value consistent service and innovative solutions. We follow a proven process from needs assessment to lifelong partnership, committed to delivering total system efficiency and reliability. If you share our values and seek to join one of the fastest-growing companies in Central/North Florida and South Georgia, we invite you to join our dynamic team