AP4 Services brings together experts from our distinguished companies—TC&E, HTS, and Maine Automation—combining unmatched engineering talent and over 100 years of collective experience. Specializing in ABB™, Alstom™, and GE™ control systems and turbines, our teams deliver premium maintenance, troubleshooting, commissioning, upgrades, and on-site training. Our extensive knowledge in electrical process control instrumentation, commissioning, and calibration ensures optimal precision across all your operations.
Our GE field service experts specialize in GE Industrial
and aero gas turbine control systems, providing support
for both legacy and new technologies to help ensure
better performance and cost-efficiency throughout
a turbine’s operational life.
HTS’ formally trained ABB™/ALSTOM™ engineers offer 100+ years of combined experience and are experts in ABB/ALSTOM controls systems’ maintenance, troubleshooting, commissioning, upgrades, and onsite training. In addition, HTS provides control system and HMI maintenance, upgrades, troubleshooting, and training, ensuring all your service needs are met in one place.
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