Company History

Since 1937, the Warner name has been synonymous with value, quality, and integrity. With Matt Warner becoming CEO in 1998, our company reached a rare accomplishment—its third generation of family ownership. Over the decades, R.W. Warner has expanded into a family of service divisions that include Warner Service, Warner Construction, Kaempf & Harris, and Warner Mechanical. Our unwavering commitment to customer satisfaction has allowed our enterprise to continually grow for over 88 years.

Warner Mechanical is one of the region’s largest and most respected mechanical contractors with equipment and technology capable of handling even the most complex major mechanical systems and plumbing installations. Our portfolio of clients includes some of the world’s largest contracting companies, as well as school and government agencies throughout the quad-state region. Our mechanical division is known for its team-focused approach to projects, scheduling integrity, reliable budgeting, and quality workmanship.

A man poses next to an R.W. Warner plumbing and heating truck with a rural landscape in the background.

For more than 70 years, Kaempf & Harris has provided exceptional craftsmanship and service to the area’s most respected and well-known mechanical companies, general contractors, corporations and institutions.

We fabricate more than 500 tons of metal every year, including aluminum, custom stainless steel, galvanized steel and black iron steel. We deliver precise, high-quality products from smaller, custom design solutions to the most complex design-build and spec industrial, commercial and institutional sheet metal projects.

We aren’t finished until we’ve provided great value through care and outstanding craftsmanship. Our high quality products are delivered on time so your project can stay on track. That’s Kaempf & Harris’ promise to you.

Of course, this level of craftsmanship wouldn’t be possible without a team of professionals who have a passion for what they do. As a small business, we’re able to get to know our clients outside of project outlines and dollar amounts. We really understand what you need, and we put that understanding to use to make a truly outstanding product.

(301) 663-6670

R.W Warner, Inc. believes that a safe and healthy work environment is an obligation to the workers, families, and clients. The prevention of occupational induced injuries or illnesses is of such consequence that it will be given precedence over productivity. We believe it is best to express safety awareness through indoctrination, safety, and health training before employees and subcontractors begin work on any project. A safe job site creates healthier and more knowledgeable workers, which helps us create the best possible final product. It is the policy of R.W. Warner, Inc., and its affiliated divisions to take all feasible and practical efforts to provide a safe and healthful place of employment for our employees. The personal safety and health of each company employee are of primary importance.

Occupational Safety Education is the backbone of the R.W Warner Inc. safety program. R.W Warner, Inc. has two full-time in-house safety training professionals that emphasize instructing, developing, inspecting, correcting, and enforcing safe work practices. The training includes but it is not limited to:

OSHA 30

OSHA 10

Fall Protection Training

Mobile Elevating Work Platform

Scaffolding

Confined Space Training

CPR, First Aid, AED

Hazard Communication

Powered Industrial Truck Training

Respiratory Protection

Lock Out Tag Out

Asbestos Awareness

Fire Prevention and Awareness

About Kaempf & Harris

Company History

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