Design Engineer, HVAC

About the role

HVAC Design Team at Larsen & Toubro focuses on creating energy‑efficient, sustainable HVAC solutions for large‑scale projects. The Design Engineer develops load calculations, duct and piping designs, ventilation and life‑safety systems, ensuring compliance with ASHRAE, ISHRAE and local codes. Works closely with stakeholders to integrate designs, supports construction, testing, commissioning and tender preparation. Chennai office, on‑site work model.

What you’ll do

• Develop HVAC system designs meeting project requirements
• Perform load, duct, piping and ventilation calculations
• Select equipment complying with codes and standards
• Prepare design layouts, schematics and documentation
• Coordinate with multidisciplinary teams for design integration
• Provide technical support during construction and commissioning
• Assist seniors with technical queries and issue resolution
• Support tender preparation, BOQ reconciliation and clash‑free modeling

What you’ll bring

• 3-7 years HVAC design experience
• Proficiency in load calculations, ducting and piping design
• Knowledge of ventilation and life‑safety systems
• Familiarity with ASHRAE, ISHRAE, NBC standards
• Ability to prepare layouts and schematics
• Coordinate design integration with stakeholders
• Support construction, testing and commissioning phases
• Assist in tender preparation and BOQ reconciliation