QUALITY. LOYALTY. INTEGRITY.
Our Services and Divisions
Warner Mechanical
When your home or business comfort systems fail or plumbing problems strike, you need a reliable, experienced partner you can trust. For over 87 years, Warner Mechanical, a proud division of R.W. Warner, Inc., has been the go-to provider for expert HVAC and plumbing services in Frederick, MD, and surrounding areas.
Kaempf & Harris
For over 80 years, Kaempf & Harris Sheet Metal has provided precision fabrication and expert installation in Frederick, MD, and the surrounding region. We specialize in high-quality, custom metal solutions for complex commercial, industrial, and institutional projects, from intricate HVAC ductwork to custom components. Our integrated service ensures seamless quality control from initial design through meticulous on-site installation.
Warner Construction
With over 87 years of legacy, Warner Construction provides expert General Contracting and Construction Management services in Frederick, MD. We deliver high-quality, dependable construction solutions for diverse, complex projects, offering comprehensive oversight from conception to completion. Partner with us to bring your building vision to life successfully and efficiently.
Williams Electric
Williams Electric, a division of R.W. Warner, Inc., offers expert electrical contracting in Frederick, MD. With 87 years of experience, our licensed team handles residential, commercial, and industrial projects of any size. We provide comprehensive services from installations and repairs to panel upgrades, generators, and lighting, ensuring safe, reliable, and lasting performance for your power needs.
Project Showcase
At R.W. Warner Inc., our mission is to deliver exceptional commercial construction projects with an unwavering commitment to quality control. Warner Quality strives to exceed client expectations by ensuring every project meets the highest standards of safety, precision, and excellence. Our dedicated team embraces a culture of continuous improvement, accountability, and collaboration, ensuring every detail is executed seamlessly from start to finish.
We are committed to fostering strong, long-lasting partnerships, maintaining transparent, proactive communication, and upholding our reputation for reliability, integrity, and superior craftsmanship in the construction industry.
Quality control training is a necessary commitment that we have created here at R.W. Warner Inc. Currently we have two full-time employees, Quality Control Manager and Quality Control Superintendent, that are responsible for coordinating quality phase meetings, ensuring proper installations, inspections and follow-up reports as needed. Quality Control training consists of but is not limited to:
FAQs
Find answers to common questions about our services and how we can assist you.
R.W. Warner, Inc. is a family-owned construction and mechanical contracting firm based in Frederick, Maryland, offering plumbing, HVAC, electrical, and general contracting services across multiple industries.
We serve a wide range of industries, including residential, commercial, industrial, institutional, and government sectors. Our team is equipped to handle everything from home services to large-scale mechanical and construction projects.
R.W. Warner, Inc. is located in Frederick, Maryland, where it has maintained a strong presence since its founding. This central location allows the company to efficiently serve clients across Western Maryland, Northern Virginia, and parts of West Virginia, supporting a wide range of residential, commercial, and industrial projects.
Our company comprises several specialized divisions:
- Williams Electric – Electrical contracting services
- Warner Mechanical – HVAC and plumbing solutions
- Warner Construction – General contracting and construction management
- Kaempf & Harris Sheet Metal – State-of-the-art sheet metal fabrication and installation services
Our website serves as a central hub to direct you to the appropriate division. To connect with the appropriate division for your project, please contact us through one of the following methods:
Phone: (301) 662-5387
Email: info@rwwarner.com
Contact: Contact Us
Our team will direct your inquiry to the relevant division, be it Warner Construction, Warner Industrial, Warner Mechanical, Warner Service, or Kaempf & Harris to ensure your project's specific requirements are met efficiently.
Our main office is situated at : 217 Monroe Avenue
Frederick, Maryland 21701 where we coordinate our operations and support projects across the region.
