Business Details
50+ Years
experience
Your Trusted Partner for Engineering Solutions in Portland, OR
Founded in 1958, Nwesi has established itself as a leader in engineering solutions for building systems. Our team specializes in optimizing facility performance, occupant comfort, and energy efficiency through hands-on expertise in HVAC, energy usage, and system integration. With decades of experience in both new construction and existing buildings, we deliver tailored mechanical and plumbing designs, commissioning services, and forensic testing. Our engineers and technicians adhere to rigorous industry standards, including NEBB, BCxA, and LEED certifications, ensuring compliance and operational excellence.We collaborate closely with architects, contractors, and facility teams to address complex challenges, from air barrier testing to semiconductor cleanroom optimization. Recognized for our technical proficiency and commitment to professionalism, we serve diverse sectors across the Pacific Northwest, prioritizing long-term client relationships and sustainable outcomes.
Services
Building Envelope Testing
Commissioning
Mechanical Design
Fire Smoke Damper Testing
Semiconductor Tool Efficiency
Cleanroom Performance Testing
Testing Adjusting Balancing
Forensic Investigations
Infrared Imaging
Regulatory Compliance Support
Details
- Year established: 1958
Highlights and features
- We have over 25 years of experience in building commissioning and forensic testing.
- Our team holds certifications from NEBB, BCxA, and LEED for rigorous quality assurance.
- We specialize in complex systems requiring precise integration of HVAC, electrical, and plumbing.
- Our engineers collaborate directly with project stakeholders to align technical solutions with business goals.
- We maintain industry leadership through active participation in professional organizations and continuing education.
Associations and certifications
- AABC Commissioning Group (ACG)
- Association of Energy Engineers (AEE)
- Building Commissioning Association (BCxA)
- Energy Management Association (EMA)
- National Environmental Balancing Bureau (NEBB)
- Pacific Northwest NEBB Chapter (PNEBB)
- US Green Building Council (LEED)
- ANSI and ANAB ISO/IEC 17024
What people say
Best commissioning teams
Meticulous work
Excellent customer service
Critical role in compliance
Optimal system performance
Services
Building Envelope Testing
Building Envelope Testing identifies air, water, and thermal leaks in structures using calibrated equipment and ASTM standards. This service ensures energy efficiency, regulatory compliance, and durability for new and existing buildings. Our NEBB-certified technicians perform comprehensive assessments, from single rooms to multi-story facilities, combining infrared imaging with pressure testing to pinpoint breaches.
Building Commissioning
Our commissioning process verifies that mechanical, electrical, and plumbing systems meet design specifications and operational needs. Applying ASHRAE standards, we conduct design reviews, equipment testing, and ongoing monitoring to optimize energy use, occupant comfort, and system longevity. This service applies to new construction and retrofits across commercial and industrial sectors.
Mechanical Design
We provide tailored mechanical and plumbing designs informed by decades of commissioning experience. Our engineers integrate MEP systems under a single contract, ensuring seamless coordination and energy-efficient solutions. Partnering with electrical experts, we deliver designs that balance functionality, cost efficiency, and compliance with LEED and other sustainability benchmarks.
Fire Smoke Damper Testing
This service ensures fire smoke dampers operate correctly during emergencies, adhering to NFPA 80, 92, and 105 standards. Our team inspects, tests, and documents damper functionality, providing compliance reports and corrective action plans. With over 20 years of experience, we serve hospitals, commercial buildings, and educational institutions, minimizing risks to life and property.
Semiconductor Tool Efficiency
Our Semiconductor Tool Efficiency Program maximizes cleanroom performance by stabilizing environments for sensitive manufacturing equipment. Using proprietary ToolTech software and ISO-certified protocols, we manage tool hookups, pressure control, and system integration without disrupting operations. This service supports semiconductor producers in maintaining precision and productivity in dynamic factory settings.
People
David Cunningham
Commissioning Services Division Manager
David leads commissioning operations in Oregon and Washington with 25+ years of experience in HVAC system optimization and forensic testing. His expertise in ASHRAE standards and LEED certification drives efficient, code-compliant building performance.
Jerry Burstedt
Senior Principal Commissioning Authority
Jerry oversees Boise office commissioning projects, leveraging 20+ years in mechanical engineering and BCxA-certified practices. His focus on data-driven diagnostics ensures long-term operational efficiency for complex facilities.
Russell Pratt
Principal Engineer
Russell directs mechanical design initiatives with a PE license and LEED AP credentials. His 30-year career spans MEP system integration and energy modeling, emphasizing sustainable solutions for healthcare and industrial clients.
Eric Costaggini
Senior Cleanroom Engineer
Eric specializes in semiconductor cleanroom testing, managing ToolTech software development and ISO-certified protocols. His work ensures stable environments for high-precision manufacturing across the Pacific Northwest.
John Herboth
Building Envelope Expert
John leads BET projects using ASTM E 779 and E 1186 standards, identifying energy loss in structures. His NEBB-certified team performs air barrier testing and infrared imaging to meet energy code requirements for new construction.
Questions
What areas do you serve?
We serve Oregon, Washington, Idaho, and Montana, with offices in Portland and Boise.
Are your technicians certified?
Yes, our team holds NEBB, BCxA, and ISO/IEC 17024 certifications for testing and commissioning.
Do you handle both new and existing buildings?
Yes, we provide commissioning and testing for new construction and retrofits.
How do you ensure compliance with regulations?
We follow ASTM, NFPA, and ASHRAE standards, providing documentation for AHJs.
Can you assist with LEED certification?
Yes, our LEED AP engineers integrate sustainable design into commissioning processes.
What industries do you specialize in?
We serve healthcare, semiconductor manufacturing, commercial buildings, and educational institutions.
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