About Us

our mission
To make the world more comfortable by protecting, enhancing, and improving people’s lives.
Company overview

Kirlin is a privately held group of construction companies that collectively specialize in Engineering and Design, Fabrication, Construction, Commissioning and Service. Our works extends throughout the United States and in select markets overseas.

We are comprised of full service specialty contracting companies capable of performing any type of commercial, industrial and governmental construction and renovation projects. On any of these projects, we may serve as the construction manager, general contractor, mechanical contractor, fire protection and/or service contractor.

2018 ENR Top 20
Fire Protection & Sprinkler
2018 ENR Top 50
Mechanical Contractor
2018 ENR Top 600
Specialty Contractor
Our History

It all began in 1960 with one job in the basement of John J. “Buddy” Kirlin. Buddy’s legacy of outstanding work and first-rate customer service is still seen throughout Kirlin every day. It’s this dedication and tenacity of top-notch people that keep us one of the largest and most respected mechanical contractors in the United States. The company was then, and is now, a highly sought-after firm, with the talent and expertise to meet the commercial, industrial and federal construction needs of DC, Maryland and Virginia.

Wayne T. Day succeeded Buddy Kirlin as President and CEO. Along with his partner Michael Mack, Kirlin became one of the largest privately held mechanical construction companies in the United States. Under Wayne and Michael’s skillful leadership, the company expanded to the Carolinas, Florida and other east coast areas. We honor the legacy of both Day and Mack by offering the Wayne T. Day Scholarship Program to employees and their families. For more information of this program, please see our Community page.