303rd Engineering Group, LLC
St. Louis, MOSuccessful Partnerships, Successful Projects
Project: Airmen's Dormitories, Scott Air Force Base
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Successful Partnerships, Successful Projects
Project: Airmen's Dormitories, Scott Air Force Base

MEP, Lighting, Energy, and Life Safety Engineering
Service detail: MEP Services
Plans Design | Calculation Reports | Prime G.C.
Project: Saddleback College Quad Access Road

Advantus Engineers is a Pittsburgh-based engineering consulting practice founded in 2004, specializing in building commissioning, sustainability consulting, MEP assessments, construction quality assurance, and environmental compliance. It serves public, institutional, and commercial clients across the Pittsburgh region. Over more than two decades, the practice has supported LEED certifications, water quality programs, and on-call MEP engineering for clients including the Pittsburgh Water and Sewer Authority and the David L. Lawrence Convention Center.
Project: Western Butler County Authority Administration Building

AFJMc is a consulting engineering firm with more than 55 years of experience delivering civil, structural, mechanical, electrical, and transportation engineering services. Its portfolio includes roadways, bridges, utility and site design, industrial process systems, higher education facilities, healthcare facilities, government buildings, sports and recreation facilities, and commercial projects.
Project: Jimmie Davis Bridge (LA 511) Replace/Rehab
Engineering a New MEP
Project: Bay Brook Elementary/ Middle School
Partner with Leaders in MEP Engineering
Project: Francis Tuttle - New Danforth Campus

Alliant Systems is an integrated mechanical engineering and construction firm headquartered in Portland, Oregon, with offices in Eugene and Bend, Oregon, and Seattle, Washington. Founded approximately 25 years ago, Alliant provides in-house mechanical systems engineering, mechanical construction, HVAC and plumbing service, building automation, and energy consulting for commercial, institutional, and light-industrial clients across Oregon and Washington. The firm is known for a true design-build process that integrates engineers, project managers, and field personnel from concept through commissioning, and all principal engineers are LEED-certified.
Service detail: Mechanical Systems Engineering

Allied Engineering Group is a consulting engineering firm located in downtown Tulsa, Oklahoma, providing mechanical, electrical, plumbing, and medical gas engineering services for a wide variety of project types. Founded in 1999, AEG brings together decades of MEP industry experience and has served state military facilities, commercial buildings, and educational institutions including Tulsa Public Schools.
Service detail: Mechanical Engineering
Fostering healthy, comfortable, and energy-conscious spaces for the Oakland and Bay Area community.
Project: UC Berkeley Hildebrand Hall HVAC Modernization
Building Relationships through Affordable Engineering Excellence
Service detail: Mechanical Engineering
Architectural Engineering Services
Project: 209 Mt Pleasant
Creative Vision Technical Precision
Project: CRISP Shared Services

Engineering Design & Consulting
Service detail: Mechanical Engineering

Professional Engineering Services - Mechanical, Electrical, Plumbing, Technology, Fire Protection
Project: Mohs & GI Procedure Room Renovation

We Create Cool Places Where People Want to Be
Project: MARTA Station Rehabilitation Program

Better Buildings. Impactful Results.
Project: Isenberg School of Management Addition

Bantam Engineering is a Portland, Oregon mechanical engineering and commissioning practice. It delivers HVAC design, plumbing design, and building commissioning for healthcare facilities, schools, government offices, airports, and semiconductor clean rooms. Owner Christine McKinley, PE holds licenses in Oregon, Washington, and California. Known for code fluency and a collaborative approach on construction sites and in permit negotiations, the practice specializes in radiant and dedicated outdoor air systems, clean-room mechanical design, and HVAC work within constrained existing buildings.
Project: Behavioral Health Resource Center
Spaces to Inspire
Service detail: Architecture

High-performance HVAC experts.
Service detail: Building Commissioning

Breen Design Group is a Torrance, California-based multi-discipline firm providing architecture, structural, civil, and MEP engineering services under one roof. Established in 2001, its integrated teams deliver coordinated design for multifamily residential communities, affordable housing, mixed-use developments, schools, and civic facilities throughout Southern California. Completed projects include the Wilshire Grand, Jordan Downs Phase 3, Rogers Middle School, and Gardenhouse Beverly Hills.
Project: Jordan Downs Phase 3
We make buildings come to life
Project: Kirtland Air Force Base Microgrid Resiliency Project
Brittain Engineering, Inc. (BEI) is a multidisciplinary consulting engineering firm in Hickory, North Carolina, specializing in mechanical and electrical engineering for the construction industry. A registered professional corporation in North Carolina and South Carolina, BEI traces its practice to 1963 and provides professional engineering design services for military facilities, hospitals and medical centers, universities and schools, commercial buildings, correctional institutions, multifamily housing, industrial plants, churches, and airports. Additional services include life cycle cost studies, building performance modeling, energy analysis, fire protection design, and engineering studies.
Service detail: Mechanical Engineering

Budlong is a multi-disciplinary MEP engineering firm founded in 1958 and headquartered in Glendale, California. For over 65 years, Budlong has delivered mechanical, electrical, plumbing, fire protection, technology, and related engineering design services on renovation, new construction, and expansion projects across California. With offices in Glendale, Los Angeles, Camarillo, and Fremont, Budlong serves clients in healthcare, commercial, education, hospitality, industrial, multi-family residential, and public infrastructure markets, with LEED-accredited designers on staff.
Service detail: Mechanical Engineering