We evaluated 57 mechanical & energy engineering agencies based on client reviews, expertise, and track record to bring you the top performers of 2026. Whether you need a specialized boutique firm or a full-service partner, this curated list helps you find the right match for your project.
Sanmina is a leading integrated manufacturing solutions provider serving the fastest-growing segments of the global.
Sanmina is a leading integrated manufacturing solutions provider serving the fastest-growing segments of the global Electronics Manufacturing Services (EMS) market.

ThermalTech Engineering is a collection of highly skilled consulting engineers specializing in mechanical, electrical.
ThermalTech Engineering is a collection of highly skilled consulting engineers specializing in mechanical, electrical and energy management engineering since 1980. We have 8 offices in 6 states (Ohio, Michigan, Indiana, Pennsylvania, Tennessee and Texas)

HEAPY is a nationally recognized leader in sustainable and resilient engineering design.
HEAPY is a nationally recognized leader in sustainable and resilient engineering design. Founded in 1945, the corporation plans, designs and commissions more than $1 billion annually in total construction costs. Through HEAPY Solutions, we also offer comprehensive engineer-led design/build construction services. .

Currently in our 76th year, the H.F.
Currently in our 76th year, the H.F. Lenz Company offers a full range of engineering services for building systems, infrastructure, and industry. Our projects span the nation, with the heaviest concentration in the Northeast.

Martin/Martin, Inc. is a full-service civil and structural engineering and surveying firm, headquartered in Colorado ...
Martin/Martin, Inc. is a full-service civil and structural engineering and surveying firm, headquartered in Colorado since the 1940s. Growing steadily over the last decade, we have offices in 6 additional locations including Avon, CO; Fort Collins, CO; Larkspur, CA; Cheyenne.
Simpson Gumpertz & Heger (SGH) is a national engineering firm committed to delivering holistic advice for our clients’ most complex challenges. We leverage our collective and diverse experience, technical expertise, and industry knowledge of structures and building enclosures, advanced analysis.

SMM is a mechanical engineering company that develops turnkey production equipment solutions combining mechanical.
SMM is a mechanical engineering company that develops turnkey production equipment solutions combining mechanical design, automation engineering, and software development. They specialize in custom industrial equipment manufacturing, CE certification services, and comprehensive project lifecycle management from design through after-sales support.
Mitsubishi Electric is a global manufacturer and technology company specializing in electrical and electronic systems across multiple industries. The company develops and produces Air Conditioning Systems, Automotive Equipment, Building Systems, Energy Systems, Factory Automation Systems, Semiconductors & Devices, Space Systems, Transportation Systems, and Visual Information Systems for commercial, industrial, and consumer markets worldwide.
GeoStru is a software development company specializing in professional engineering applications. They produce and distribute software solutions for geotechnical engineering, geology, geophysics, hydrology, and seismic analysis. The company offers desktop software, web-based applications (GeoApp), cloud services (Geostru 365), training courses, and technical support for engineering professionals worldwide.
EDS provides HVAC load calculation software and energy audit tools for residential heating and cooling systems. Their cloud-based platform offers heat loss/heat gain calculations, home energy auditing capabilities, and lead generation tools specifically designed for HVAC contractors and home performance professionals.
Foxconn is the world’s largest electronics manufacturer.
Foxconn is the world’s largest electronics manufacturer. Foxconn is also the leading technological solution provider, and it continuously leverages its expertise in software and hardware to integrate its unique manufacturing systems with emerging technologies.

M/E Engineering, P.C. provides mechanical and electrical engineering services including initial programming, planning.
M/E Engineering, P.C. provides mechanical and electrical engineering services including initial programming, planning and feasibility studies; schematic design and systems life cycle cost analysis; design development and value engineering; engineers’ estimates of probable construction costs.

Dunham is a full service mechanical and electrical consulting firm.
Dunham is a full service mechanical and electrical consulting firm. By holding professional registrations in all 50 states, the District of Columbia, Puerto Rico, and Canada, Dunham can offer fully coordinated.

BKF Engineers provides engineering, surveying, and land planning services for architects, commercial and residential.
BKF Engineers provides engineering, surveying, and land planning services for architects, commercial and residential developers, colleges and universities, cities and counties, governmental agencies, hotels, health care facilities, and large corporations.

I. C. Thomasson Associates, Inc.
I. C. Thomasson Associates, Inc. (ICT) is an employee-owned, multidisciplinary engineering firm providing expertise in mechanical, electrical, controls, plumbing, fire protection, information technology, energy efficiency and environmental services. With offices located in Nashville.

Jabil is a manufacturing solutions provider with over 250,000 employees across 100 locations in 30 countries.
Jabil is a manufacturing solutions provider with over 250,000 employees across 100 locations in 30 countries. The world's leading brands rely on Jabil's unmatched breadth and depth of end-market experience, technical and design capabilities, manufacturing know-how, supply chain insights and global product management expertise.

Founded in 1940, Degenkolb Engineers’ practice reflects more than eight decades of commitment to expertise, client se...
Founded in 1940, Degenkolb Engineers’ practice reflects more than eight decades of commitment to expertise, client service, and life-long learning. Our award-winning structural designs saved clients hundreds of millions of dollars and are delivered taking full advantage of our expertise and experience.
Celestica enables the world's best brands.
Celestica enables the world's best brands. Through our unrivaled customer-centric approach, we partner with leading companies in aerospace and defense, communications, enterprise, healthtech, industrial, capital equipment, and smart energy to deliver solutions for their most complex challenges.

For over 35 years, Arora’s solid mix of industry knowledge and expertise allows the firm to offer a broad spectrum of.
For over 35 years, Arora’s solid mix of industry knowledge and expertise allows the firm to offer a broad spectrum of engineering services, including oversight, project management, and design of new and existing mechanical, electrical, plumbing, electrical aeronautical, fire protection.

Bechtel is a trusted engineering, construction and project management partner to industry and government.
Bechtel is a trusted engineering, construction and project management partner to industry and government.
50Pros currently lists 57 verified Mechanical & Energy Engineering agencies, each with client reviews and detailed profiles to help you find the right partner.
Start by reviewing client testimonials, case studies, and ratings. Use 50Pros filters to narrow by budget, location, and team size. You can also use “Start a Project” to get matched automatically based on your requirements.
Yes, browsing agency profiles, reading reviews, and submitting project requests through 50Pros is completely free for businesses looking to hire an agency.
Agencies are ranked based on a combination of client reviews, response time, profile completeness, and overall engagement. Verified and featured agencies may appear higher in results.