Dunbar Mechanical Services delivers complete mechanical, fabrication, and construction solutions for industrial, municipal, and process-driven facilities across Southern Ontario and beyond. From process piping and HVAC to heavy rigging, custom fabrication, and civil work, we bring specialized trades under one accountable contractor.
Design, fabrication, and installation of industrial process piping and plumbing systems for biogas, biosolids, energy, water, and wastewater facilities. Our certified pipefitters, steamfitters, and plumbers handle everything from new construction and system expansions to shutdown tie-ins and retrofits, delivering complete piping solutions engineered to each facility’s operational requirements.
New build, expansion, or retrofit, we deliver piping built to spec.
Effective ventilation and odour management for process-intensive environments where standard commercial systems fall short. We design and install industrial HVAC, biofilter, and chemical scrubber systems built to perform in high-humidity, corrosive, and odour-laden conditions, working alongside engineers and facility teams from design through commissioning.
From full facility HVAC to biofilter and scrubber systems, we handle it.
Precision equipment installation, alignment, and heavy rigging for demanding process environments. We have executed lifts in excess of 125,000 lbs, including work over operating facilities and to upper floors of multi-storey structures. Every operation begins with detailed lift plans and disciplined pre-planning to ensure safe, precise results.
Complex lift or precision install, we plan and execute it safely.
Custom skid-mounted and containerized mechanical systems, built to specification at our Southwestern Ontario facility. Every unit is assembled, piped, wired, and tested in-house before delivery, minimizing site installation time and reducing commissioning risk. Past builds include landfill gas conditioning skids, mobile biosolids processing plants, and custom process equipment enclosures.
Custom skids and containerized systems, built and tested in-house.
Structural, civil, and site work that complements our mechanical scopes and keeps projects with a single accountable contractor. From site preparation and concrete work to structural steel erection and underground services, we reduce interface risk and coordination overhead while holding the same standard of quality across every trade.
Site works to structural steel, delivered under one contractor.
From process piping and HVAC to heavy rigging, fabrication, and civil work, Dunbar Mechanical Services delivers complex industrial and municipal projects under one accountable contractor across Southern Ontario and beyond.