Public engineering firm directory

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Advanced Engineering Consultants

Columbus, OH

Advanced Engineering Consultants specializes in providing mechanical, electrical, plumbing, fire protection, technology, and utilities engineering design and construction administration services for the built environment. Established in 1998, the practice works collaboratively with owners, architects, and contractors across the Midwest, the nation, and globally. It has completed nearly 2,000 projects across diverse sectors including government, healthcare, education, and commercial markets.

WebsitePhone4 offices6 projects7 leaders14 credentialsFounded 1998

Project: Columbus Division of Police Crime Laboratory Renovation

Service: Mechanical EngineeringService: HVAC Design and UpgradesService: Electrical EngineeringIndustry: FederalIndustry: GovernmentType: MEP+23 more

Algebra AEC, LLC

Cleveland, OH

MEP & Sustainability Consulting

WebsitePhone1 office18 projects1 leadersFounded 2014Size Estimate: 5-30 employees

Project: Cleveland Clinic / CWRU - Health Education Campus

Service: MEP EngineeringService: HVAC EngineeringService: Plumbing EngineeringIndustry: HealthcareIndustry: EducationType: MEP+33 more

Annex Engineering Group

Columbus, OH

Founded in 2017, Annex Engineering Group is a service-oriented MEP and fire protection engineering firm based in Columbus, Ohio. Annex offers mechanical, electrical, plumbing, and fire protection coordination engineering for projects ranging from office remodels, multi-family residential, and restaurants to manufacturing/industrial facilities and historical renovations. Licensed in 49 states and Washington D.C., Annex serves as the prototype engineer for several national clients, establishing design standards that reduce construction costs and timelines while increasing consistency and quality.

WebsitePhone1 officeFounded 2017Updated Jun 2026

Service detail: Mechanical Engineering

Service: Mechanical EngineeringService: HVAC System DesignService: Central Plant SystemsIndustry: CommercialIndustry: RetailType: MEP+31 more

CMTA

Louisville, KY

Building Science Leadership

Website49 offices2 projects3 leaders6 credentialsFounded 1969Size Estimate: 1,560 employees

Project: CMTA Corporate Headquarters Building 2

Service: Consulting EngineeringService: Mechanical EngineeringService: Electrical EngineeringIndustry: ManufacturingIndustry: AviationType: MEP+30 more

Galloway & Company, LLC

Greenwood Village, CO

Nationally recognized. Locally preferred.

WebsitePhone16 offices1 projects1 leaders2 credentialsUpdated Jun 2026

Project: Future Legends Sports Complex

Service: ArchitectureService: New ConstructionService: Renovation & ExpansionIndustry: CommercialIndustry: ResidentialType: Architecture & Engineering+48 more

Karpinski Engineering Inc.

Cleveland, OH

MEPT engineering for complex buildings

WebsitePhone6 offices7 projects1 leaders15 credentialsFounded 1983

Project: Heart and Vascular Institute

Service: MEPT Building Systems DesignService: Mechanical EngineeringService: Electrical EngineeringIndustry: HealthcareIndustry: EducationType: MEP+15 more

Landmark Facilities Group, Inc.

Norwalk, CT

Landmark Facilities Group, Inc. engineers mechanical, electrical, plumbing, fire protection, and life safety systems for buildings ranging from historic museums and sacred sites to schools, libraries, and municipal facilities. Founded in 1988 and headquartered in Norwalk, Connecticut, Landmark has delivered MEP design across more than 25 states and internationally. Its engineers bring specialized expertise in historic preservation environments, geothermal and photovoltaic system integration, energy auditing, building automation design, and commissioning.

WebsitePhone2 offices3 leadersFounded 1988Updated Jun 2026

Service detail: Mechanical Engineering

Service: Mechanical EngineeringService: Electrical EngineeringService: Plumbing EngineeringIndustry: Arts & CultureIndustry: Historic PreservationType: MEP+13 more

McHenry & Associates, Inc.

Warrensville Heights, OH

McHenry & Associates, Inc. is a consulting MEP engineering firm in Warrensville Heights, Ohio, providing independent mechanical, electrical, and plumbing engineering services since 1960. Built on a foundation of repeat-client referrals, it serves Northeast Ohio and clients across the United States with building system design, building assessments, code analysis, feasibility studies, energy audits, building energy modeling, commissioning, and LEED sustainable design across education, healthcare, commercial, industrial, religious, retail, and institutional project types.

WebsitePhone1 office23 projects7 leaders9 credentialsFounded 1960

Project: John Carroll University - Athletic, Wellness & Event Center

Service: Mechanical EngineeringService: Central Chilled & Hot Water Plant DesignService: Refrigeration SystemsIndustry: EducationIndustry: HealthcareType: MEP+32 more

McKinley Architecture and Engineering

Wheeling, WV

Delivering successful projects through experience and innovation.

WebsitePhone7 offices5 credentialsUpdated Jun 2026

Service detail: Architecture

Service: ArchitectureService: EngineeringService: Structural engineeringIndustry: EducationIndustry: HealthcareType: Architecture & Engineering+20 more

Motz Engineering

Cincinnati, OH

Higher Standards. Better Results.

Website4 offices1 projectsUpdated Jun 2026

Project: FC Cincinnati Mercy Health Practice Facility

Service: Mechanical EngineeringService: HVACService: Central Utility Plant DesignIndustry: AviationIndustry: Financial ServicesType: Mechanical Engineering+26 more

Otisco Engineering Ltd.

Westerville, OH

Creating Sensible, Sustainable Engineered Solutions.

WebsitePhone1 office7 projects1 leaders10 credentials1 publications

Project: NASA Glenn Bioswale

Service: Mechanical EngineeringService: HVAC Design & InstallationService: Plumbing EngineeringIndustry: CommercialIndustry: ResidentialType: Environmental Engineering+37 more

STAN and Associates, Inc.

Dayton, OH

STAN and Associates, Inc. is a Dayton, Ohio mechanical, electrical, and plumbing consulting engineering firm founded in 1981, specializing in design engineering, commissioning, energy engineering, and expert witness services for building systems across a broad range of facilities nationwide. STAN Engineers brings a unique combination of design and commissioning expertise, with all projects staffed by licensed Professional Engineers.

WebsitePhone1 officeFounded 1981Updated Jun 2026

Service detail: Design Engineering

Service: Design EngineeringService: HVAC EngineeringService: Electrical EngineeringIndustry: CommercialIndustry: EducationType: MEP+11 more

Salas O'Brien

Aiken, SC

Engineered for Impact

WebsitePhone12 offices2 projects5 leaders5 credentialsSize Estimate: 1,000+ employees

Project: Wake Tech East Campus

Service: Built EnvironmentService: Mechanical EngineeringService: Electrical EngineeringIndustry: HealthcareIndustry: EducationType: Automation & Controls+37 more