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

Landmark Credit Union

Landmark Credit Union

Milwaukee Tool

Milwaukee Tool Re-Adaptive Reuse

Door County Medical Center

Door County Medical Center

333 N Water Street, Milwaukee WI

333 Water

Lake Monona Waterfront Design

City of Madison Lake Monona Waterfront

Milwaukee County Fleet Maintenance Office Addition

Milwaukee County Fleet Maintenance Office Addition

Village of Germantown DPW

Village of Germantown Department of Public Works Facility

Hippo Haven

Milwaukee County Zoo Adventure Africa Hippo Haven

Fincantieri Marinette Marine

Fincantieri Marinette Marine Plant Expansion

Dane County Airport

Dane County Regional Airport Multi-Phase Parking Expansion

Potawatomi Rec Center

Forest County Potawatomi Recreation Center




Christ Church Mequon


Milwaukee Symphony Orchestra Grand Theater


Canaveral Port Authority Cruise Terminal 8 Expansion and Renovation

Exact Sciences Parking Structure-header

Exact Sciences Parking Structure

Manitowoc Crane

Manitowoc Crane High Bay Heavy Assembly Addition

Komatsu South Harbor Campus - Milwaukee

Komatsu South Harbor Campus

Komatsu Fabrication Building

Komatsu Fabrication Building


Gulfstream Park Pegasus

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Coca-Cola Refreshments Bottling Line Expansion


Wisconsin State Capitol Dome Moisture Repair

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Canaveral Port Authority Cruise Terminal 10 Expansion and Renovation

The Couture

The Couture

VFW Aquatic Facility_GRAEF

City of De Pere VFW Aquatic Facility

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

Southwest Cargo

Southwest Airlines Cargo Renovation at Hartsfield-Jackson International Airport

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Ripon College Fieldhouse

Mechanical, Electrical & Plumbing Engineering Contacts

Jason Gerke

Jason Gerke, PE, LEED AP, CxA

Practice Area Leader - Mechanical, Electrical, Plumbing
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