RJ Engineering, LLC is a professional engineering firm specializing in commercial HVAC, plumbing, and fire protection system design.

With over 25 years of industry experience and Professional Engineer licenses in 13 states, our team delivers innovative, efficient, and code-compliant solutions for projects of every scale.

We pride ourselves on combining technical expertise with responsive service, ensuring each client’s vision is met with precision and reliability.

From concept to completion, RJ Engineering partners with architects, contractors, and building owners to create systems that perform flawlessly while optimizing comfort, safety, and sustainability.