The Hidden Automation Industry Inside Every Building
The United States has approximately 900,000 elevators in operation, carrying an estimated 325 million passenger trips per day. The vertical transportation industry -- elevators, escalators, moving walkways, and dumbwaiters -- generated $25 billion in North American revenue in 2025, with the modernization segment (replacing aging relay-based controllers with programmable systems) growing at 8 percent annually. Every one of those 900,000 elevators requires a control system that manages motor drives, door operators, position sensors, safety devices, and dispatching logic. The shift from proprietary relay-logic controllers to PLC-based and microprocessor-based systems has created sustained demand for automation professionals who can install, program, commission, maintain, and modernize elevator control systems. Elevator mechanics who add automation and controls expertise earn $75,000 to $140,000 -- well above the industry median -- and modernization specialists are among the most sought-after professionals in building infrastructure.
The elevator industry operates differently from most manufacturing or process automation sectors. Four multinational OEMs -- Otis (United Technologies), Schindler, KONE, and TK Elevator (formerly ThyssenKrupp) -- control approximately 75 percent of the global market and maintain proprietary control systems that they service exclusively. Independent elevator companies (approximately 800 in North America) serve the remaining market, primarily in modernization, maintenance, and new installations in buildings that specify non-proprietary equipment. This structure means that automation skills transfer across the industry, but deep platform knowledge of specific OEM systems (Otis Compass, Schindler PORT, KONE EcoSpace, TK AGILE) provides a competitive advantage with that OEM's service organization. Independent companies typically use non-proprietary controllers from vendors like Elevator Controls Corporation (ECC), Virginia Controls, and Motion Control Engineering (MCE), which are PLC-based systems that elevator mechanics can program and maintain without depending on the OEM.
How Elevator Control Systems Work
A modern traction elevator control system has three major subsystems. The motion controller manages the AC motor and drive (variable frequency drives from vendors like ABB, Yaskawa, and Magnetek have replaced the older motor-generator sets and DC drives in modernization projects), controlling acceleration, deceleration, speed regulation, and floor leveling accuracy. The door operator controller manages the opening and closing of both the car doors and the hoistway doors at each landing, including safety edge detection that prevents the doors from closing on passengers. The dispatching and logic controller handles car calls (buttons inside the car), hall calls (buttons at each landing), floor position tracking, directional assignment, and the overall operational logic including fire service recall, earthquake operation, independent service mode, and the dozens of other operational modes defined by the ASME A17.1 Safety Code for Elevators and Escalators.
In buildings with multiple elevators, group dispatching algorithms determine which car responds to each hall call. Modern dispatching uses destination selection systems -- passengers enter their desired floor on a touchscreen or keypad in the lobby, and the system assigns them to a specific car that is optimized to serve that destination with minimum wait time and travel time. Otis Compass, Schindler PORT, and KONE Destination Control System are proprietary implementations. These systems use algorithms that consider current car positions, passenger loads (measured by load weighing devices), traffic patterns based on time of day, and predicted demand. The software engineering behind destination dispatching is sophisticated enough that Otis and Schindler maintain dedicated algorithm development teams, and the performance improvement over conventional dispatching is significant -- 30 to 50 percent reduction in average wait times and 20 to 30 percent reduction in average travel times in high-rise buildings.
Safety systems in elevators are non-negotiable and heavily regulated. The governor monitors car speed and triggers the safety device (mechanical brakes that grip the guide rails) if the car exceeds rated speed by a defined percentage. Door interlocks prevent the car from moving unless all hoistway doors are fully closed and locked. Pit buffers provide a final deceleration stop at the bottom of the hoistway. Emergency brakes on the machine provide a secondary stopping method independent of the normal brake. All safety devices must be tested annually by qualified inspectors, and the control system must be configured to enforce proper safety device operation. The ASME A17.1 code and its referenced standards (NFPA 72 for fire alarm integration, NFPA 70/NEC for electrical installation) define the requirements, and elevator inspectors verify compliance. Understanding safety codes is essential for elevator automation professionals because non-compliant installations cannot be placed in service.
Modernization: Where the Growth Is
Approximately 60 percent of the elevators in the United States are over 20 years old, and the modernization market represents the fastest-growing segment of the industry. A typical modernization project replaces the controller (relay logic to PLC or microprocessor), the motor drive (DC or single-speed AC to variable frequency drive), the door operators (mechanical to electronic), and the fixtures (buttons, indicators, and hall stations). The car and hoistway structure, guide rails, and often the machine remain in place. Modernization projects range from $50,000 for a basic hydraulic elevator controller replacement to over $500,000 for a high-rise traction elevator group modernization with destination dispatching.
Modernization engineers survey the existing installation, design the new control system layout, specify components, and create wiring diagrams and PLC programs. During installation, they work alongside elevator mechanics to remove old equipment, install new components, wire the system, and commission it -- testing every function, adjusting parameters, and verifying safety device operation. The commissioning process alone can take 1 to 3 weeks per elevator, running through hundreds of test procedures documented in the ASME A17.2 Guide for Inspection of Elevators, Escalators, and Moving Walks. Engineers who can complete modernization projects on schedule and within budget while keeping the elevator in service for as many hours per day as possible (minimizing disruption to building tenants) are extremely valuable.
IoT and Predictive Maintenance: The New Frontier
The major OEMs are investing heavily in IoT-enabled elevator monitoring. Otis ONE, Schindler Ahead, KONE 24/7, and TK MAX monitor elevator performance in real time through sensors on door operators, drives, controllers, and ride quality accelerometers. Data is transmitted to cloud platforms where machine learning algorithms detect anomalies that predict failures before they cause shutdowns. These systems can detect door hesitation indicating worn rollers, drive temperature trends indicating bearing degradation, and ride quality changes indicating guide rail alignment issues -- often weeks before a service call would be triggered. The automation professionals who install, configure, and maintain these IoT systems bridge traditional elevator mechanics with modern data engineering, and the role is expanding rapidly as OEMs and building owners demand predictive rather than reactive maintenance.
Certifications, Training, and Salary
The International Union of Elevator Constructors (IUEC) apprenticeship is the primary pathway into the elevator industry. The 4-year apprenticeship combines on-the-job training with classroom instruction in electrical theory, motor controls, code requirements, and increasingly, PLC programming and networking. Apprentice wages start at approximately $28 to $35 per hour (60 percent of full mechanic rate in most locals) and increase every six months. Licensed elevator constructors earn $45 to $70 per hour in base wages before overtime and benefits, translating to $95,000 to $145,000 annually. The Certified Elevator Technician (CET) certification from the National Association of Elevator Contractors (NAEC) validates competence for non-union professionals. QEI (Qualified Elevator Inspector) certification is required for those performing code compliance inspections.
Elevator mechanics with PLC programming and VFD commissioning skills earn $80,000 to $130,000. Modernization engineers who design and commission control system replacements earn $90,000 to $145,000. Controls engineers developing proprietary controller software for OEMs earn $95,000 to $150,000. IoT and predictive maintenance system engineers earn $85,000 to $135,000. Project managers overseeing modernization programs earn $100,000 to $155,000. Contract rates through Automate America for elevator automation specialists range from $65 to $110 per hour for standard modernization work and $85 to $140 per hour for high-rise destination dispatching system programming.
Jobs are concentrated in major metropolitan areas where high-rise buildings drive demand -- New York City (by far the largest market with over 80,000 elevators), Chicago, Los Angeles, San Francisco, Boston, Philadelphia, Washington DC, Houston, Dallas, and Miami. However, every city and town with multi-story buildings needs elevator service, and the geographic distribution is broader than most building trades because elevators exist everywhere. The four major OEMs and hundreds of independent companies provide employment options ranging from large corporate service organizations to small local companies where a two-person team handles everything from installation to maintenance to modernization.
