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MEP-HVAC Engineer

Larsen & Toubro -
Mumbai, Maharashtra

Apply Now

Job details

Qualifications

Mechanical engineering
Mechanical Engineering
Master's degree
Revit
Bachelor's degree
HVAC
HVAC design
B.E.
Construction experience
BSME
Spring framework

Full job description

LNT/-E/1707741

BNF-Buildings & Factories
Mumbai

Posted On 30 Mar 2026
End Date 26 Sep 2026
Required Experience3 - 8 years

Skills

Knowledge & Posting Location

Hvac Mechanics HVAC

Minimum Qualification

Bachelor of Engineering (BE)

Job Description

Job Description: MEP-HVAC Engineer (Turnkey / "Lock & Key" Projects)

Role Purpose

In a Lock & Key (Turnkey) project, the MEP-HVAC Engineer (Heating, Ventilation, and Air Conditioning) is the master of the building’s "indoor environmental quality." While other engineers focus on the structure or the water, the HVAC Engineer is responsible for the invisible comfort of the occupants.

On a turnkey project, the client expects a perfectly tempered, silent, and fresh atmosphere the moment they receive the "Key." This role requires a high degree of technical precision to ensure that massive mechanical systems—chillers, AHUs, ducts, and fans—are integrated into high-end architectural ceilings and joinery without compromising the design or the acoustic performance of the space.

I. Strategic Core Responsibilities

1. Technical HVAC Coordination & Design Validation

The HVAC Engineer ensures the thermal comfort model of the building translates into a functional site reality.

Heat Load Validation: Reviewing the original design against actual site conditions (e.g., changes in glass specifications or partition layouts) to ensure the cooling/heating capacity is still adequate.
BIM & Spatial Coordination: Leading the coordination of ductwork within tight ceiling voids. In turnkey luxury projects, "Ceiling Height" is a premium; the Engineer must find ways to route large ducts without lowering the architectural ceiling line.
Equipment Selection & Submittals: Reviewing technical data for FCUs (Fan Coil Units), VRF (Variable Refrigerant Flow) systems, and Grilles/Diffusers to ensure they meet the specific CFM (Cubic Feet per Minute) and NC (Noise Criteria) levels required.

2. Installation Management & "Clean-Site" Protocols

HVAC systems are highly sensitive to construction dust, which can ruin a turnkey handover.

Ductwork Fabrication & Sealing: Overseeing the installation of GI (Galvanized Iron) or PI (Pre-Insulated) ducts. The Engineer must ensure all joints are sealed with approved mastic and that leakage tests (Light Tests) are performed before insulation.
Refrigerant & Chilled Water Piping: Supervise the brazing of copper pipes or the welding of MS pipes. On a Lock & Key project, a refrigerant leak post-handover is a major liability; the Engineer enforces a strict 48-hour pressure-standing test.
Cleanliness (Duct Protection): Implementing a "Closed-End" policy where all open ducts are capped with plastic sheets at the end of every shift to prevent dust and debris from entering the system before the final filters are installed.

3. Acoustic & Vibration Control

In luxury turnkey environments, "Silence is Luxury."

Sound Attenuation: Ensuring that sound attenuators and acoustic lining are correctly installed in ducts serving quiet zones like bedrooms, boardrooms, or theaters.
Vibration Isolation: Verifying that all hanging equipment (FCUs/Fans) is mounted on spring hangers or rubber pads to prevent structural vibration from traveling through the building frame.
Velocity Management: Balancing the airflow to ensure that air "hiss" at the diffusers is eliminated, maintaining a Noise Criteria (NC) level of 25–30 in sensitive areas.

4. Testing, Adjusting, and Balancing (TAB)

The "Lock & Key" handover depends on the system's performance on Day 1.

Air Balancing: Using anemometers and hoods to ensure that the actual airflow at every grille matches the design intent.
Hydronic Balancing: Adjusting two-way and three-way valves to ensure the correct chilled water flow reaches every cooling coil in the building.
Control Logic & BMS: Working with the Automation Engineer to ensure that thermostats are calibrated and that the Building Management System (BMS) correctly controls the staging of cooling to save energy while maintaining comfort.

II. Technical Proficiency & Domain Expertise

The MEP-HVAC Engineer must be a specialist in:

Psychrometrics: Understanding the relationship between temperature, humidity, and dew point to prevent condensation (sweating) on diffusers—a common failure in turnkey projects.
Refrigeration Cycles: Deep knowledge of VRF, Chillers, and DX (Direct Expansion) systems.
Ventilation Standards: Familiarity with ASHRAE 62.1 for fresh air requirements and NFPA 90A for fire/smoke damper installation.
Diffuser Technology: Knowledge of linear slot diffusers, jet nozzles, and swirl diffusers, and how their "throw" and "spread" interact with interior furniture.

III. Required Qualifications & Experience

Education & Professional Status

Academic: Bachelor’s Degree in Mechanical Engineering.
Software: Proficiency in AutoCAD, Revit MEP, and HVAC load calculation software (like HAP - Hourly Analysis Program).
Certifications: Membership in ASHRAE or a local equivalent professional engineering board.

Professional Experience

Duration: 6–10 years in HVAC construction, with at least 3–4 years in Turnkey Fit-out or Luxury High-Rise developments.
Sector Expertise: Experience in environments where HVAC is critical, such as cleanrooms, hospitals, or 5-star hotels.

IV. Soft Skills & Behavioral Competencies

Meticulous Eye for Detail: Ensuring that linear grilles are perfectly straight and flush with the ceiling plaster.
Problem-Solving Agility: Finding a way to re-route a 600mm duct when a structural beam is discovered in an unexpected location.
Communication: Explaining complex airflow issues to the Interior Designer or Client in a way that focuses on "comfort" and "aesthetics" rather than just "duct sizes."
Systemic Thinking: Understanding how the HVAC system interacts with the building envelope (insulation) and the electrical load.

V. Key Performance Indicators (KPIs)

Thermal Comfort Index: Achieving the target room temperature (typically 22°C ±1°C) across all zones during the final load test.

Acoustic Compliance: Ensuring all noise levels are within the specified NC (Noise Criteria) limits.

Duct Leakage Rate: Achieving a leakage rate of less than 1% (or as per SMACNA standards) during pressure testing.

Handover Timing: Completing the "Final Commissioning" and "Air Balancing" 14 days prior to the "Lock & Key" date to allow for final cleaning.

Apply Now

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