Industrial Control Panels & PLC Systems for Packaged Plant and M&E Contractors

At Harmonised Electrical Services Limited, we partner with M&E contractors and packaged plant companies to provide advanced control systems and skid packages, tailored to enhance the efficiency and reliability of your industrial operations. Just one of our jobs has saved a client over £1m in energy bills since 2022

Booster Package controls for an M&E project

We design and manufacture control panels for booster sets and packaged plant systems used across commercial and industrial projects throughout the UK & Ireland. Our solutions include plc programming, BMS integration, intelligent pump sequencing and full factory testing, ensuring systems arrive ready for fast installation and reliable commissioning. Built with demanding plant rooms in mind, our panels deliver efficient, automated and dependable control from day one.

Immersion Heater Top-Up/Flow Heater control

We design and manufacture control panels for immersion heater systems used across both commercial and industrial plantrooms throughout the UK & Ireland. Our solutions include plc control, safety interlocks, temperature monitoring and full BMS integration, ensuring systems arrive ready for fast installation and fast commissioning. Built for reliability and energy efficiency, our controls provide safe, automated and dependable hot water system control

Our Projects

Explore our recent projects showcasing our expertise in electrical automation and controls.

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Our Mission: Excellence in Every Project

We strive to provide top-notch control solutions that enhance productivity, reduce carbon footprints and ensure safety.

Key Features of Our Services

Engineering-Led Industrial Control Panel Solutions

Every project begins with a detailed understanding of the mechanical plant and system operation. We design both PLC and non PLC control strategies that ensure safe, efficient and reliable performance from day one.

Specialists in Packaged Plant & Plantroom Controls

We manufacture industrial control panels for packaged plant, skid packages, plantrooms and HVAC/process systems. Our panels are designed for seamless BMS integration and easy installation for M&E and mechanical contractors.

Design → Build → Test → Commission

As a UK control panel manufacturer, we deliver a complete service from concept and electrical design through to panel build, factory testing and site commissioning.

Factory-Tested, Installation-Ready Panels

All control panels are fully assembled, labelled and function tested before delivery, reducing site time, project risk and commissioning delays.

Documentation & Compliance as Standard

Every project includes full electrical schematics, I/O schedules, O&M manuals and certification, ensuring smooth handover and simplified future maintenance.

Built for Long-Term Reliability

We prioritise high-quality components, logical PLC programming and maintainable designs to keep industrial control systems running reliably for years.

Proven Expertise

With extensive experience in the field, our team has successfully completed numerous projects with a focus on quality and safety.

Our Services

Explore our comprehensive range of services designed for industrial clients seeking precision and reliability in electrical controls and automation.

Control Panel Design & Build

We specialize in the design and manufacture of bespoke industrial control panels for packaged plant, plantrooms and engineered systems, delivering reliable, compliant and installation ready solutions.

PLC Programming

Our PLC programming services deliver reliable automation, efficient control strategies and seamless integration with mechanical plant, process equipment and BMS platforms, as well as MODbus TCP/IP and BACnet communication.

System Integration

We integrate control panels, field devices, PLC Systems and BMS systems into fully co-ordinated automation solutions that improve system performance, monitoring and long-term operational efficiency.

Commissioning & Testing

We provide full factory and site commissioning, functional testing and optimisation to ensure systems operate efficiently, safely and exactly as designed, guaranteeing reliability.

Upgrades & Retrofit

We upgrade and retrofit existing control systems, improving reliability, performance and compliance while minimising disruption to operational plant and site downtime.

Electrical Installation

Our team provides electrical installation for control panels and automation systems within industrial environments, ensuring compliance and safety standards are met.

Time for action

Tell us about your project, ask a question, or request a quote - we’ll get back to you promptly with clear next steps.

Get in Touch

"Harmonised delivered the plantroom control panels exactly as specified and fully factory tested. Installation and commissioning were smooth, and the documentation provided made handover straightforward. We’ll be working with them again."

Marry Smith Operations Manager

"The control panels supplied for our booster packages were built to a high standard and integrated seamlessly with our mechanical systems. Programming was logical, well structured and easy to support post-installation."

Esme Shelby Facilities Manager

"We engaged Harmonised to upgrade and integrate existing controls within a live building. The retrofit was completed efficiently with minimal disruption, and the system has operated reliably since commissioning."

Thomas Nortje Head Engineer