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Business Details
50+ Years
experience
Trusted Mechanical and Plumbing Contractors in Kensington, MD
Heffron Company has been a trusted leader in mechanical and plumbing contracting for over a century, serving the Washington Metropolitan region and East Coast. Founded in 1922, we specialize in delivering high-quality HVAC, plumbing, and process systems for commercial, biotechnology, government, and healthcare projects. Our commitment to building relationships, technical excellence, and safety has earned us long-term partnerships with clients like PEPCO, Georgetown University, and the U.S. Chamber of Commerce. With four generations of family leadership and a team of degreed professionals, we combine tradition with innovation to solve complex challenges. Our focus on value engineering, energy efficiency, and client satisfaction ensures projects are completed on time, on budget, and to the highest standards.

Recognized for awards like the Washington Building Congress Craftsmanship Award, we maintain a culture of safety and continuous improvement across 400,000 annual person-hours. As a family-owned business, we uphold the values of integrity, loyalty, and respect that have defined our legacy since World War I veteran Joseph Heffron Company established the company. Our multidisciplinary expertise and state-of-the-art coordination department enable us to tackle even the most demanding projects, from biotech facilities to historic preservation. By prioritizing partnerships with subcontractors, architects, and engineers, we deliver solutions that exceed expectations while maintaining our reputation as one of the region's most respected contractors.
Services
HVAC Installation Plumbing Systems Preventative Maintenance Design-Build Projects Biotech Facility Systems
Details
  • Year established: 1922
Highlights and features
  • We offer 103 years of specialized expertise in mechanical systems for biotech and commercial sectors
  • Our family-owned business maintains four generations of integrity and client focus
  • We implement a patented process for energy-efficient HVAC and plumbing installations
  • Our team includes 20 degreed professionals and factory-trained technicians
  • We guarantee safety across 400,000 annual person-hours with OSHA-compliant practices
What people say
Excellent in all aspects Best mechanical contractor Commitment to teamwork Professional and reliable Impressive job coordination
Services
HVAC Installation
Heffron Company provides comprehensive HVAC installation for commercial and biotech facilities. Our state-of-the-art systems combine energy efficiency with advanced climate control technology. With BIM coordination and pre-fabrication capabilities, we ensure precise installations that meet ASHRAE standards while minimizing operational disruptions for clients across the East Coast.
Plumbing Systems
Our plumbing solutions serve power plants, dairy processing facilities, and commercial buildings. From PEPCO's generating stations to Safeway's dairy operations, we deliver code-compliant piping systems. Our team handles complex projects requiring specialized materials and precision installation, maintaining safety standards across all industrial and institutional applications.
Preventative Maintenance
Heffron Company's service department manages preventative maintenance for HVAC and plumbing systems. Covering equipment from centrifugal chillers to energy management systems, our 50+ technicians provide scheduled servicing that extends equipment life. This proactive approach reduces emergency repairs while maintaining optimal system performance for building owners and property managers.
Design-Build Projects
Our design-build capabilities combine mechanical expertise with construction management. Using 3D BIM modeling, we coordinate complex systems before installation. This approach streamlines project timelines and reduces costs for clients like George Mason University and the Corcoran Gallery, delivering turnkey solutions from concept through completion.
Biotech Facility Systems
Heffron Company specializes in mechanical systems for biotechnology facilities along Maryland's I-270 corridor. We install specialized piping and HVAC systems for GMP manufacturing and research labs. Our experience with companies like MedImmune and Human Genome Sciences ensures compliance with stringent industry standards for contamination control and environmental parameters.
People
George Dunn, Jr.
Chief Executive Officer
Third-generation leader with Harvard S.C.M.P. training, transforming Heffron Company into an industry leader while maintaining family values since 1922. Oversees strategic direction and client relationships.
Colin Dunn
President
Fourth-generation executive with Notre Dame MBA, focusing on client relationships and long-term business sustainability. Manages day-to-day operations and strategic growth initiatives.
Mike Hunke
Chief Financial Officer
CPA and CMA with construction industry finance expertise, managing financial operations since 2022. Brings experience from KDB Mechanical and Lafarge North America to ensure fiscal stability.
Steven Johnson
Senior Vice President of Construction
25+ years mechanical contracting experience, from apprentice to executive. Oversees project management teams for $2M-$70M projects, ensuring technical excellence and client satisfaction.
Jonathan Boyd
Senior Vice President of Service
20-year HVAC expert leading 50+ service technicians. Manages preventative maintenance contracts and emergency repairs for biotech and commercial clients across the DMV region.
Questions
What industries does Heffron Company specialize in?
We focus on commercial buildings, biotechnology facilities, government projects, and healthcare institutions across the Washington Metropolitan region and East Coast.
Do you offer emergency repair services?
While we don't provide 24/7 emergency services, our team responds promptly to urgent HVAC and plumbing issues during regular business hours.
How does Heffron Company ensure project quality?
Through BIM coordination, pre-fabrication, and 103 years of quality control processes that have earned us multiple industry awards for craftsmanship.
What financing options are available?
We offer leaseback arrangements, payback analysis, and equity participation options for large-scale mechanical system installations.
How long has Heffron Company been in business?
Since 1922, making us one of the oldest family-owned mechanical contracting firms in the Washington, D.C. area.
What safety certifications do you hold?
Our safety program maintains OSHA compliance and has achieved excellent incident rates across 400,000 annual person-hours of work.