Pioneering Precision
DECCO has been a pioneer in establishing welding and biopharmaceutical standards used throughout the industry today. Our commitment to excellence is seen in the results, as we consistently produce high-quality products that meet the strictest of industry standards and exceed our clients’ expectations. We are proud of our 10,000+ FDA-validated projects that provide lifesaving medicines, therapies, and treatments around the globe.
Our History
Founded in 1934 by William T. Donovan to address the burgeoning needs of the coal industry during World War II, WT Donovan laid the groundwork for a legacy that continues to thrive. The 1950s ushered in a new era as Bud Greenwald, the visionary owner of HART Engineering, acquired the company and rebranded it as Donovan Engineering Construction Co., Inc. This strategic merger combined Donovan’s extensive coal handling expertise with HART’s renowned welding capabilities, setting the stage for future success.
As the years progressed, leadership transitioned to Bud’s son, Roy Greenwald, and Brian Walsh during the transformative 1980s. This period marked a pivotal moment in our history as we adopted the name DECCO and established a state-of-the-art fabrication shop in Brookline, NH, alongside a federally approved apprentice program that nurtured the next generation of skilled professionals.
Our commitment to excellence was soon recognized when DECCO won its first Excellence in Construction award, solidifying our reputation as one of the largest open shop mechanical contractors in New England. Fast forward to 2023, a significant milestone was reached as DECCO was proudly acquired by Comfort Systems USA. This partnership is poised to accelerate our growth and expand our reach across our diverse operating groups: Construction, DECCOServ, DECCOFab, and Critical Equipment Handling.
Core Values
Partnership – We trust and respect each other.
Our employees are our “partners;” we are humbled that they have entrusted their careers with us. We prioritize the wellbeing of all DECCO partners, whether they are welding in the field or working in our corporate office. DECCO clients are our lifeblood, and we exist to help them succeed in their endeavors.
Excellence – We take pride in our work.
We are personally invested in the work we execute. We will continuously strive to exceed client expectations for quality, safety, and value.
Commitment – We honor them, always.
We do what we say, always. Our partners are empowered to make decisions that reflect their unique perspective and experiences. DECCO will always see projects through to the end.
Ethics – Uncompromising integrity and honesty in everything we do.
We will earn trust, and our actions will always align with our commitments. Our words are our bond. DECCO partners promise to always communicate quickly and effectively with our clients throughout the duration of any and all projects.
Servant Leadership – In order to lead, we must first serve.
We are empathetic listeners, dedicated to helping each other succeed.
Recent Awards & Recognition
- Associated Builders and Contractors (ABC) – 2024 Top Performer
- ABC NH/VT Chapter – 2024 Excellence in Construction Merit Award
- ABC MA Chapter – 2024 Excellence in Construction Merit Award
- ABC National – 2024 Accredited Quality Contractor
- Engineering News-Record (ENR) – 2024 Top 600 Specialty Contractor
- ABC – 2023 National Safety Excellence Award
- ENR – 2023 New England Best Project in Manufacturing
- ABC – 2023 STEP Safety Management System: Diamond
- Great Place To Work – Certified 2022 & 2023
