For more than 24 years, Dunbar Mechanical Services Inc. has built its reputation on integrity, quality workmanship, and a commitment to exceeding client expectations. Founded in 2002 and family-owned and operated from our base in St. Clements, Ontario, we deliver personalized service while holding the highest standards on every project we take on.
We specialize in complex mechanical work for biogas, biosolids, energy, water, wastewater, and industrial facilities across Southern Ontario and beyond. Our capabilities span process piping and plumbing, HVAC and odour control, millwrighting and rigging, custom fabrication, and civil and general construction. Bringing these trades under one roof lets us act as a single accountable contractor across a broader project scope, reducing coordination risk and keeping technically demanding builds on schedule.
These are environments where system integrity and reliability aren’t optional. As a TSSA licensed contractor working to ASME B31.1, ASME B31.3, and CSA B51 standards, we hold ourselves to the codes and quality our clients’ operations depend on, whether the scope is a new build, a facility retrofit, or a shutdown tie-in on an active site.
Our success is driven by an experienced and dedicated team, many of whom have been with us for more than 20 years. In a company founded in 2002, that kind of retention is rare, and it’s a large part of why clients trust us with their most specialized work. Their knowledge, craftsmanship, and consistency show up on every job, from the first lift to final commissioning.
We believe great projects begin with great relationships. We focus on building long-standing partnerships, earning trust through open communication, reliability, and results that hold up over time. Many of our clients return to us again and again, and just as many come to us through their referrals.
More than two decades after our founding, Dunbar Mechanical Services Inc. continues to build on the values that have guided us from the beginning: family, integrity, quality, and lasting relationships. We’re proud of the reputation we’ve earned, and we remain committed to delivering dependable mechanical solutions for the facilities that keep our region running.
Based in St. Clements, Ontario, we serve industrial, municipal, and process-driven facilities across Southern Ontario, from Sarnia and Windsor in the southwest to Kingston in the east, and north to the Bruce Peninsula. For specialized fabrication and process systems, our reach extends across the province and into North America.
From process piping and heavy rigging to HVAC, custom fabrication, and civil work, we deliver complex industrial and municipal projects under one accountable contractor across Southern Ontario and beyond.