Engineer -Design Engineering

Lennox International; Chennai; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Lennox International in Chennai, India seeks an experienced refrigeration systems designer to develop HVAC&R components and assemblies. You will perform cycle calculations, load analyses, and system evaluations while selecting key components.

The role requires hands-on CAD modeling, design validation, and collaboration with global teams. Strong fundamentals in thermodynamics and energy efficiency are essential for compliant, cost-effective solutions.

Qualifications

• Bachelor's or Master's in Mechanical Engineering, Refrigeration & Air Conditioning, Thermal Engineering, or related field.
• 3+ years of experience in refrigeration system design, HVAC, or thermal product development.
• Strong understanding of Refrigeration Cycles, Thermodynamics, Heat Transfer, Fluid Mechanics, and Psychrometrics.
• Experience in refrigeration component selection and system optimization.

Responsibilities

• Design and develop refrigeration systems, components, and assemblies for HVAC&R products.
• Perform refrigeration cycle calculations, load analysis, and system performance evaluations.
• Select and size compressors, heat exchangers, expansion devices, refrigerants, and other system components.
• Create and modify 3D models, engineering drawings, and BOMs using CAD tools.
• Conduct design validation through simulations, testing, and prototype evaluations.
• Collaborate with global engineering teams, manufacturing, sourcing, and quality functions during product development.
• Support product design reviews, root cause analysis, and continuous improvement initiatives.
• Ensure compliance with industry standards such as ASHRAE, AHRI, UL, ISO, and environmental regulations.
• Participate in new product development, value engineering, and cost reduction projects.

Skills

Refrigeration cycles

Thermodynamics

Heat transfer

Fluid mechanics

Psychrometrics

Education

Bachelor's or Master's in Mechanical Engineering / Refrigeration & Air Conditioning / Thermal Engineering

Tools

Creo

SolidWorks

CATIA

NX

AutoCAD

HTRI

ANSYS

MATLAB

Job description

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

Job Description

Key Responsibilities

• Design and develop refrigeration systems, components, and assemblies for HVAC&R products.
• Perform refrigeration cycle calculations, load analysis, and system performance evaluations.
• Select and size compressors, heat exchangers, expansion devices, refrigerants, and other system components.
• Create and modify 3D models, engineering drawings, and BOMs using CAD tools.
• Conduct design validation through simulations, testing, and prototype evaluations.
• Analyze system performance, energy efficiency, reliability, and compliance with applicable standards.
• Collaborate with global engineering teams, manufacturing, sourcing, and quality functions during product development.
• Support product design reviews, root cause analysis, and continuous improvement initiatives.
• Ensure compliance with industry standards such as ASHRAE, AHRI, UL, ISO, and environmental regulations.
• Participate in new product development, value engineering, and cost reduction projects.

Required Qualifications

• Bachelor's or Master's Degree in Mechanical Engineering, Refrigeration & Air Conditioning, Thermal Engineering, or related field.
• 3+ years of experience in refrigeration system design, HVAC, or thermal product development.
• Strong understanding of:
  • Refrigeration Cycles
  • Thermodynamics
  • Heat Transfer
  • Fluid Mechanics
  • Psychrometrics
• Experience in refrigeration component selection and system optimization.
• Knowledge of refrigerants, compressors, evaporators, condensers, and expansion devices.
• Ability to perform engineering calculations and design documentation.

Preferred Technical Skills

• CAD Tools: Creo, SolidWorks, CATIA, NX, or AutoCAD.
• Simulation Tools: Coil Designer, HTRI, ANSYS, MATLAB, or similar engineering tools.
• Knowledge of DOE, DFMEA, GD&T, and Design Validation processes.
• Experience working on HVAC, Commercial Refrigeration, Heat Pumps, Rooftop Units, Chillers, or Industrial Cooling Products.
• Understanding of energy efficiency standards and sustainability initiatives.

Desired Competencies

• Strong analytical and problem-solving skills.
• Excellent communication and stakeholder management.
• Ability to work in a global cross-functional environment.
• Continuous improvement mindset and customer-focused approach.
• Ability to manage multiple projects and meet deadlines.

Qualifications

Requires a high school diploma or an equivalent combination of education and experience. Requires at least 2 years related experience.Strong oral and written communications skills. Knowledge of CAD software techniques and tools. Knowledge of design tools, and principles involved in production of precision technical plans, blueprints, drawings, and models.