Mechanical, Electrical & Plumbing Engineering


GRAEF’s mechanical, electrical, plumbing, and fire protection team focuses on sustainable designs which reduce operating costs, enhance asset value, improve air quality and enhance community health, aesthetics and vitality.

Our mechanical, electrical, plumbing, and fire protection team has extensive experience in new designs, replacements, renovations, and upgrades; are leaders in maintenance and cost-friendly designs; and have in-depth energy and sustainable design experience. We also have extensive experience performing facility and equipment assessments and providing recommendations to not only enhance performance, but reduce energy costs.

Our Work

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Exact Sciences Parking Structure

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Froedtert Health Parking Structure 6

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Manitowoc Crane High Bay Heavy Assembly Addition

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Caterpillar North of Rawson Facility

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Komatsu South Harbor Campus

Komatsu Texas

Komatsu Fabrication Building


Caterpillar Fab Shop

Lake Nona Medical City VA SimLearn Facility

Lake Nona Medical City VA SimLearn Facility


Gulfstream Park Pegasus

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Coca-Cola Refreshments Bottling Line Expansion

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Park Arthur Pavilion


Wisconsin State Capitol Dome Moisture Repair

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Canaveral Port Authority Cruise Terminal 10 Expansion and Renovation

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Caterpillar Heritage Building

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City of De Pere VFW Aquatic Center

Kalahari Convention Center_Sandusky

Kalahari Convention Center

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St. John’s County Council on Aging Transit Facility Solar Power

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St. Augustine Preparatory Academy

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Southwest Airlines/Airtran Integrations

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Southwest Airlines Cargo Renovation at Hartsfield-Jackson International Airport

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Ripon College Fieldhouse

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Ed Smith Stadium Renovations

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Quad/Graphics, Inc. Oklahoma Facility Expansion

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Oshkosh YMCA Addition and Renovation

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Milwaukee Tool Corporate Headquarters

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Milwaukee Bucks Parking Structure

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Midland States Bank

Mackie Building

Mackie Building Restoration

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Lawrence University Warch Campus Center

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Westminster Suncoast Manor

Mechanical, Electrical & Plumbing Engineering Contacts

Gerke Jason Cropped

Jason Gerke, PE, CxA

Practice Area Leader - Mechanical/Plumbing
Stern Erv Cropped

Erv Stern, DES

Practice Area Leader - Electrical
Lizasoain Jose Cropped

Jose Lizasoain, PE, CxA

Practice Area Leader - Mechanical

Why Choose Us

“It’s all about relationships” - Len Anhalt

As a Full Service Engineering, Planning and Design Firm we COLLABORATE to give you a fully integrated design.

INNOVATE your Future with one of our experts with local knowledge and national experience.

Our multidisciplinary experts will FORMULATE your VISION into a successful Project.

What Clients Say

Each of the GRAEF engineers was very professional, knowledgeable, courteous, and most pleasant to work with throughout all phases of the project. I would not hesitate to recommend GRAEF for the engineering of any project.

Phyllis Thorpe, St. Johns County, Florida