Cleary Zimmermann Engineers


Our Commissioning Agents are practitioners of the art and science of building performance delivery.

We serve as a value-added partner that provides project delivery support, acting as a liaison between owners and their appointed representatives, as well as the design and construction project teams. Our input fosters a collaborative approach and enhances the unified team effort. By getting involved early with a focus on the operability of the commissioned systems, we use a technical process that delivers building performance. A step beyond traditional process Commissioning, our NEBB-certified technical Commissioning prioritizes conformance of work with the industry-accepted national procedural standard. By engaging early in the design process and through construction and warranty, our focus on the operability of buildings and systems ensures buildings meet the owner’s project requirements.

With backgrounds in controls and technical field experience, coupled with soft skills, our Commissioning Agents serve as a third-party advocate on-site.

Commissioning Services

NEBB and ACG Certified Commissioning Agents

Whole Building Systems Technical Commissioning 
HVAC Systems
Plumbing Systems
Building Envelope
Electrical Systems
Special Electrical
Fire Protection Systems (BSC)

Testing, Adjusting and Balancing of Environmental Systems (TAB)

Commissioning Principal

Brian Keller, NEBB CP

Principal | Commissioning