❄️ HVAC Design Engineer – Mechanical | 4–6 Years Exp | L&T WET IC – Chennai

September 2, 2025

Job Description

📝 Summary

Are you an experienced HVAC Design Engineer looking to work on international-scale water and effluent treatment projects? Larsen & Toubro (L&T) – Water & Effluent Treatment (WET) IC is hiring a Mechanical HVAC Engineer for its Chennai headquarters. This role is perfect for professionals with 4–6 years of experience in HVAC system design across desalination plants, ETPs, refineries, and process industries. If you’re skilled in heat load calculations, equipment sizing, and HVAC compliance standards like ASHRAE, this is your opportunity to join a global engineering leader.


📌 Job Details at a Glance

Job TitleHVAC Design Engineer (Mechanical)
LocationChennai
DepartmentWater & Effluent Treatment (WET) IC
CompanyLarsen & Toubro (L&T)
Posted On19 Aug 2025
Application End Date15 Feb 2026
Experience Required4 – 6 years
Minimum QualificationBachelor of Engineering (BE) – Mechanical
Work ShiftDay Shift
Key ToolsAutoCAD, HAP, Elite Software, Navisworks, Pipe/Duct Sizer
Standards KnowledgeASHRAE, SMACNA, NFPA, DW, BS, SBC

🔧 Key Responsibilities

✅ HVAC System Design

  • Perform heat load/cooling load calculations, air flow design, and head loss calculations.
  • Design HVAC systems including chillers, AHUs, FCUs, cooling towers, VRFs, and ventilation fans.
  • Plan optimized layouts for ducting, piping, and control systems.
  • Create comprehensive design basis reports and detailed engineering drawings.

🧾 Technical Documentation & Procurement

  • Prepare BOQs, technical specs, RFQs, and TBEs.
  • Review and comment on vendor engineering documents.
  • Support procurement and vendors in project execution and documentation control.

🏗️ Compliance & Standards

  • Ensure design compliance with international codes and standards such as:
    • ASHRAE, SMACNA, NFPA, BS, SBC, and DW.
  • Maintain adherence to building codes, quality, and safety norms.

🤝 Coordination & Client Interface

  • Collaborate with clients, architects, and multidisciplinary engineering teams.
  • Attend technical meetings with clients and vendors.
  • Conduct site visits and vendor inspections as required.

🧠 Required Skills & Tools

🛠️ Technical Skills

  • HVAC design and calculation tools:
    • HAP (Hourly Analysis Program)
    • AutoCAD
    • Elite Software
    • Navisworks
    • Duct & Pipe Sizer Tools
  • Proficient in HVAC equipment selection using OEM tools.
  • Space planning for HVAC plant rooms and large equipment like AHUs.

💡 Soft Skills

  • Strong analytical and problem-solving skills.
  • Excellent communication and team coordination.
  • Ability to work under pressure in fast-paced, cross-functional teams.

🎓 Qualifications

  • Bachelor of Engineering (BE) or B.Tech in Mechanical Engineering
  • 4 to 6 years of hands-on HVAC design experience in:
    • Desalination plants
    • Effluent treatment plants
    • Refineries
    • Power/process industries

🌟 Why Join L&T WET IC?

  • Be part of international water treatment and desalination projects.
  • Work in a high-impact engineering role within a globally renowned company.
  • Access to latest design tools and world-class standards.
  • Grow with a team committed to sustainability, quality, and innovation.

🚀 Apply Now

Ready to take your HVAC design career to the next level? Join L&T’s Water & Effluent Treatment team in Chennai and contribute to impactful infrastructure across the globe.

👉 Apply Now on the Official L&T Careers Page

Don’t miss this opportunity to be part of future-ready HVAC engineering solutions!