Company Profile

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 workplace for career development. Come, stay, and grow with us.

Key Responsibilities

Job Description

Design & Develop high-fidelity 1D,2D or 3D thermal models for components & sub-systems using in house system simulation tools or external tools like Modelica ,GT-SUITE , Amesim or Simulink.
Simulate and analyze thermal, fluid, and control system behaviors under various operating conditions.
Collaborate with cross-functional teams including mechanical, controls, and software engineers to integrate simulation models into product development workflows.




Calibrate the component and sub-system models using experimental test data to minimize the model prediction errors .
Validate simulation models against experimental or field data and refine models for accuracy and performance.
Design & Develop modularized architecture for system simulation tool catering wide range of HVAC & refrigeration system architectures
Document methodologies, assumptions, and results for internal and external stakeholders.

Required Qualifications

Master’s degree in Mechanical Engineering, Thermal Engineering or a related field.
Minimum 4 years of experience in developing physics based HVAC component & system models in Modelica or GT-SUITE.
Proficiency in HVAC and Refrigeration system architecture (design and simulation)
Strong understanding of thermodynamics, heat transfer, and fluid dynamics applied to HVAC.
Experience with system & component modeling, tuning parameter estimation, and model val

📌 Specialist -System Modeling (Chennai)
🏢 Lennox India Technology Centre
📍 Chennai