GRP|WEGMAN - Innovation from Concept to Completion

CRISIS AVERTED

Find out how the GRP|WEGMAN Team helped OWU avoid a catastrophic situation.

CRISIS AVERTED

Find out how the GRP|WEGMAN Team helped OWU avoid a catastrophic situation.

A Brighter Tomorrow

Harness the Sun with GRP|WEGMAN's Expert Solar Installations.

Highly Qualified & Trained Technicians

Whether it’s a new system installation or regular maintenance, our HVAC/R and plumbing teams deliver excellence on every call—so you can focus on running on what's truly important.

Bright Future

Enhancing safety and visibility on this major Mississippi River crossing with state-of-the-art lighting solutions

THE GRP|WEGMAN WAY

What is the GRP|WEGMAN Way? Hear from our employees on what it's like to work for such an amazing company.

CRISIS AVERTED

Find out how the GRP|WEGMAN Team helped OWU avoid a catastrophic situation.

A Brighter Tomorrow

Harness the Sun with GRP|WEGMAN's Expert Solar Installations.

Highly Qualified & Trained Technicians

Whether it’s a new system installation or regular maintenance, our HVAC/R and plumbing teams deliver excellence on every call—so you can focus on running on what's truly important.

Bright Future

Enhancing safety and visibility on this major Mississippi River crossing with state-of-the-art lighting solutions

THE GRP|WEGMAN WAY

What is the GRP|WEGMAN Way? Hear from our employees on what it's like to work for such an amazing company.

Innovation

Solar

Expert Technicians

ELECTRICAL

The GRP|WEGMAN Way

Ohio Weslyan University

Over seven decades of excellence

We have been a private, family-owned business for over seven decades. We take great pride in exceeding our customers’ expectations. As a result, we have built an impeccable reputation for understanding our customers’ goals and objectives and delivering long-term, reliable building solutions.

Client-First Approach

We are a servant-minded, client-focused team committed to advocating for our clients and putting their needs first. Our nimble and flexible approach allows us to adapt to your unique requirements, ensuring that doing business with us is fast, easy, and efficient. We combine hard work, dedication, and a willingness to go the extra mile to build trust and deliver projects the right way. We thrive on solving problems, embracing new challenges, and helping ensure your organization’s enduring success and economic stability.

Comprehensive Facility & Energy Solutions

We have established an impressive reputation delivering exceptional quality and unparalleled service. Our extensive clientele, many of whom engage us for multi-year, multiple phased projects, is a testament to our consistency and commitment to excellence.

Versatile and Skilled Team

Our team is not just large; it’s versatile and highly skilled. With our diverse group of dedicated employees, we bring a holistic approach to your project: From innovative design to cutting edge equipment; from flexible funding vehicles to high quality finished product.

Proven Track Record

We take immense pride in our proven track record, highlighted by our portfolio of successfully completed projects and achievements in safety and regulatory compliance. Partnering with GRP|WEGMAN means aligning with a trusted ally committed to your long-term success. Our mission is to create projects that are built to last and optimized for energy efficiency. We aren’t just building; we are revolutionizing infrastructure and powering efficiencies.

Where we do our best work

Renewable Energy

Our expert engineers, project managers, and technicians are prepared to deliver tailor-made solar projects from concept to completion, ensuring a seamless, efficient transition to renewable energy for you.

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Design/Build

We manage both the design and construction phases of your project, streamlining communication, reducing costs, and ensuring a cohesive, efficient process from concept to completion.

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Facility & Energy Performance

We are an Innovative Facility & Energy Solutions company specializing in design build, energy-efficient renovations for any type of government, school, college, university, non-profit, commercial or industrial building.

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Facility Services

We provide preventative maintenance for industrial and commercial buildings, keeping them operating at top capacity. Whether it’s Electric, Plumbing or HVAC/R needs, we look at the big picture, solve your problem at its core and offer preventative care.

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Water/WasteWater/
Infrastructure

We deliver comprehensive water, wastewater, and infrastructure solutions focused on reducing water loss, optimizing energy use, and improving system performance. From advanced SCADA systems and energy-efficient technologies to accurate metering and methane capture for renewable energy, we provide sustainable, cost-effective services that enhance operational efficiency and ensure long-term infrastructure reliability.

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Industrial

Our team is built to handle complex piping systems, high pressure & temperature vessels, electrical systems, control systems, and other industrial equipment in a variety of applications.

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Illinois

1 Mechanical Dr.
Bethalto, IL 62010

618-258-9000

Missouri

4240 Duncan Ave.
Suite 200
St. Louis, MO 63110

618-258-9000

Michigan

418 N Main St.
2nd Floor
Royal Oak, MI 48067

248-330-7908

Ohio

18 E William St.
Delaware, OH 43015

614-233-1289

South Carolina

934 Old Clemson Highway
Seneca, SC 29464

864-276-7315

Indiana

38 W Main St.
Carmel, IN 46032

317-377-6080

CRISIS AVERTED

CRISIS AVERTED

A Brighter Tomorrow

Highly Qualified & Trained Technicians

Bright Future

THE GRP|WEGMAN WAY

CRISIS AVERTED

A Brighter Tomorrow

Highly Qualified & Trained Technicians

Bright Future

THE GRP|WEGMAN WAY