Assistant Service Manager (HVAC)
Who we are:
Johnson Controls is a world leader in smart buildings, creating safe, healthy and sustainable spaces. For nearly 140 years, we’ve made buildings better and now we’re transforming them again with our award-winning digital technologies and services. We’re using artificial intelligence and data-driven solutions to give you deeper insight into your building’s health, sustainability and performance. It’s changing the way we design, operates and maintains indoor environments and driving to a new era of autonomous buildings.
We deliver the blueprint of the future for industries such as healthcare, schools, data centers, airports, stadiums, hotels, manufacturing and beyond through OpenBlue, our comprehensive suite of connected solutions.
Johnson Controls offers the world’s largest portfolio of building technology, software and services. Supported by a team of more than 100,000 dedicated employees working across 150 countries, we’re helping customers achieve their sustainability goals and power their mission.
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What you will do:
The Service Engineer – HVAC Chillers is responsible for installation support, preventive maintenance, breakdown service, troubleshooting, and overhauling of HVAC chiller systems. The role ensures optimal performance, reliability, energy efficiency, and customer satisfaction across assigned customer sites.
What we look for:
Installation & Commissioning
Support installation, commissioning, and start-up of air-cooled and water-cooled chillers
Verify system compliance with design specifications and safety standards
Coordinate with project teams, contractors, and customers during commissioning
Service & Maintenance
Perform preventive and corrective maintenance of HVAC chiller systems
Diagnose and troubleshoot mechanical, electrical, and control system faults
Carry out overhauls, compressor servicing, oil analysis, and refrigerant handling
Ensure timely closure of service calls and breakdowns
Technical Support
Interpret wiring diagrams, P&IDs, and control logic
Calibrate sensors, valves, and control devices
Ensure proper operation of pumps, cooling towers, and associated equipment
Maintain compliance with OEM guidelines and statutory safety norms
Customer Management
Interact with customers professionally and provide technical explanations
Prepare service reports, root cause analysis (RCA), and recommendations
Upsell AMC, spares, and service upgrades where applicable
Documentation & Compliance
Maintain detailed service records and job reports
Follow EHS guidelines, work permits, and safety procedures
Support audits and quality improvement initiatives
Key Skills & Competencies
Strong knowledge of HVAC chiller systems (screw, centrifugal, scroll, reciprocating)
Hands-on experience with refrigerants (R134a, R410A, R407C, etc.)
Electrical troubleshooting (motors, VFDs, starters, panels)
Familiarity with BMS, PLCs, and control systems
Analytical and problem-solving skills
Good communication and customer-handling skills
Willingness to travel and work on-site
Desired Certifications (Preferred)
HVAC / RAC Certification
OEM Chiller Training (Carrier, Trane, Daikin, York, etc.)
Electrical Safety / EHS Certification
Work Conditions
Field-based role requiring travel to customer sites
May require working in shifts, weekends, or during emergencies
Physically capable of working in plant rooms and industrial environments