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Enjoy an open bar and a delicious buffet thanks to R.W. Warner. What began as a small service-oriented plumbing business in 1937 has grown into a multi-faceted company comprised of five specialized divisions serving the life sciences, pharmaceutical, manufacturing, retail, office, industrial, and institutional sectors.

R.W. Warner is one of the largest Mechanical Construction firms in Frederick County and has been a part of the construction team of the largest biotech jobs in Frederick County and regionally, including Kite Pharma, Ellume, JHU BSL3, as well as multiple NIH labs at Fort Detrick. Now into its third generation of family ownership and operations, the company remains committed to its core values of operating with the highest level of integrity, providing superior products, utilizing state of the art equipment and technology, and always delivering dependable service and pride in workmanship. The result is one of the most respected and enduring reputations in the industry.