Sr. Refrigeration Laboratory Technician

Who We Are Who We Are Lennox (NYSE: LII)

Driven by 130 years of legacy, HVAC and refrigeration success, Lennox provides our residential and commercial customers with industry-leading climate-control solutions. At Lennox, we win as a team, aiming for excellence and delivering innovative, sustainable products and services. Our culture guides us and creates a workplace where all employees feel heard and welcomed. Lennox is a global community that values each team member’s contributions and offers a supportive environment for career development.

Come, stay, and grow with us.

Heatcraft Refrigeration is a long-standing leader in the world of commercial refrigeration, providing climate-control solutions. Their state-of-the-art manufacturing facilities in the cities of Stone Mountain and Tifton, Georgia, produce evaporators, condensers, compressor racks, and other top-quality refrigeration products for their six market-leading brands:
Bohn, Larkin, Climate Control, Chandler, Magna Industrial and Inter Link. Heatcraft products are primarily used to preserve food and other perishables in supermarkets, convenience stores, restaurants, warehouses and distribution centers, in addition to other applications such as data centers, pharmaceutical and industrial process cooling.

Stone Mountain: 100% Onsite

The Refrigeration Laboratory Technician is responsible for supporting the testing, evaluation, troubleshooting, and development of refrigeration systems in a laboratory environment. This role requires a highly skilled technician with substantial hands-on experience working with commercial or industrial HVAC/R equipment. The successful candidate will independently set up, operate, diagnose, modify, and maintain test systems while ensuring compliance with safety and quality standards.

Due to the technical complexity of the testing environment, candidates must possess meaningful HVAC/R experience and demonstrate a strong understanding of refrigeration systems, controls, electrical systems, instrumentation, and troubleshooting methodologies.

• Set up, operate, monitor, and maintain refrigeration and HVAC/R test equipment.
• Support product development, performance testing, validation, and investigative projects.
• Install, modify, and repair refrigeration and HVAC/R systems, components, and instrumentation.
• Troubleshoot mechanical, electrical, and refrigeration system issues independently.
• Collect, analyze, and document test data and observations.
• Assist engineers in developing test procedures and executing laboratory test plans.
• Ensure laboratory equipment is calibrated, maintained, and operating safely.
• Maintain compliance with laboratory safety procedures and environmental regulations.
• Support facility and laboratory HVAC/R systems as needed.
• Provide technical recommendations regarding equipment operation, test setup improvements, and troubleshooting solutions.

• Associate degree, technical certification, or vocational training in HVAC, Refrigeration, Mechanical Technology, Electrical Technology, or a related field.
• Minimum of 3 years of hands-on experience servicing, troubleshooting, installing, or commissioning HVAC/R equipment.

• 8+ years of experience as an HVAC/R service technician or installer, with demonstrated field troubleshooting experience. Experience as a facilities engineer, facilities technician, or maintenance specialist working with commercial or industrial HVAC/R systems is also relevant.
• Experience working in an HVAC or refrigeration laboratory environment.
• Vocational or technical school graduates with significant documented field experience in HVAC/R service and repair.

• Strong knowledge of refrigeration cycles, airflow systems, compressors, condensers, evaporators, and expansion devices.
• Ability to read and interpret wiring diagrams, control schematics, piping diagrams, and technical documentation.
• Experience with electrical troubleshooting, controls, sensors, and instrumentation.
• Familiarity with refrigerant charging, recovery, leak detection, and system performance analysis.
• Proficiency using diagnostic tools, gauges, multimeters, data acquisition systems, and other laboratory instrumentation.
• Working knowledge of laboratory safety practices and industry standards.

• EPA Section 608 Certification.
• Experience with data acquisition systems and laboratory…