About Heffron
Heffron is a full-service mechanical contractor headquartered in Maryland, serving the DMV — Washington D.C., Maryland, and Virginia. For over 100 years, we have built long-term relationships with the institutions that power our communities — hospitals, universities, government agencies, and the companies advancing science and technology.
Our work spans mechanical construction, preventive maintenance, emergency service, and in-house fabrication. We bring specialized expertise to life sciences, healthcare, mission-critical, government, education, commercial, and industrial markets.
1922
Heffron begins as a plumbing and heating contractor serving the growing capital region.
1928
The annual Heffron picnic becomes a tradition — a gathering that reflects a family-run culture built on loyalty and craft.
1940s
Heffron supports critical government infrastructure during World War II, laying the foundation for decades of federal work.
1960s
The company grows beyond plumbing into full-scope mechanical contracting — HVAC, piping, and controls.
1980s
Heffron establishes deep expertise in mission-critical environments, including hospitals and pharmaceutical facilities.
2000s
A dedicated prefabrication shop opens, enabling tighter tolerances, faster schedules, and greater quality control.
2020
Heffron builds mechanical infrastructure for vaccine production facilities under compressed, high-stakes timelines.
2022
A century of showing up — for clients, for communities, and for the craft. The next hundred years begin.
2025
Heffron earns first place in Category II of the MCAA/CNA Safety Excellence Award, recognizing an unwavering commitment to protecting every person on every jobsite.
