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ESI is celebrating our 50th anniversary. I want to thank all former and current employees for their hard work and dedication in making this possible. We are proud to be a part of a company that has been successful for this long. Here’s to 50 more!

John Rabak Jr. – President


Master Systems Integrator

Today’s open-systems marketplace for building controls is forcing the buildings industry to rapidly change how business is being done. Manufacturers are embracing the concept of open systems at a staggering rate, and the benefits are being realized daily. The advantages of a single infrastructure reach into almost every aspect of a facility including reduced up-front construction costs, lower life-cycle costs, improved system management, enhanced back-office reporting, better service, and proactive maintenance.

In the building-controls market, an evolution is taking place. Industry-wide standards are being adopted from industry best practices and a new breed of controls contractors, the Master Systems Integrator (MSI), is emerging. Device-level manufacturers and software-based applications allow their products to talk with other products from other manufacturers without the need for custom design, re-engineering, or closed tool-sets. In the same way as computers have evolved from proprietary solutions into open systems, so control systems are evolving into open systems that are made to work by the MSI.

As an MSI, ESI offers a host of system-specific knowledge, with deep understanding of HVAC controls, lighting controls, or energy monitoring in any number of combinations.

New Installations

From new construction projects to full replacement of outdated building automation systems, ESI’s team of automation experts have you covered. Contact us today!

Retro-fit Solutions

With 40+ years of experience in building automation, ESI has the expertise to retro-fit your existing system to maximize energy efficiency & minimize operating expenses in your facilities.

Systems Integrations

ESI has the knowledge and expertise to seamlessly integrate with your existing Building Automation System. Don’t be held hostage by an automation system that isn’t working to your expectations.

Engineered Services Inc. (ESI) was founded in 1972 with two offices located in Sterling (HQ) and Richmond. Our technicians are all factory trained and certified, and all engineering, programming and graphics are done in-house.