SPECIALIZED MECHANICAL SERVICES
FOR COMPLEX FACILITIES

Design, fabrication, and installation for biogas, biosolids, energy, water, and wastewater facilities across Southern Ontario and beyond.

TSSA Licensed Contractor | ASME B31.1 Power Piping | ASME B31.3 Process Piping | CSA B51 | Heating Fuels

industrial millwrighting and rigging

ONE CONTRACTOR. FULL SCOPE.

Dunbar Mechanical Services delivers complete mechanical, fabrication, and construction solutions for industrial, municipal, and process-driven facilities. From process piping and heavy rigging to HVAC, custom fabrication, and civil work, we bring specialized trades under one accountable contractor, reducing coordination risk and keeping complex projects on schedule.

WHAT WE DO

Five core capabilities, delivered to the same standard of safety, quality, and schedule performance.

Process Piping & Plumbing

Industrial process piping and plumbing for biogas, biosolids, energy, water, and wastewater facilities, from new construction to shutdown tie-ins and retrofits.

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HVAC & Odour Control

Industrial ventilation, biofilter, and scrubber systems engineered to perform in high-humidity, corrosive, and odour-laden process environments, from design to commissioning.

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Millwrighting & Rigging

Precision equipment installation, alignment, and heavy rigging for demanding process environments, including engineered lifts in excess of 125,000 lbs.

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Fabrication

Custom skid-mounted and containerized mechanical systems, assembled, piped, wired, and tested in-house before delivery to reduce site time and commissioning risk.

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Civil & General Construction

Structural, civil, and site work delivered alongside our mechanical scopes, keeping your entire project with a single accountable contractor from site prep to final build.

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Start Your Project

From a single scope to a full facility build, we bring specialized mechanical trades under one accountable contractor. Let’s talk about what you need.

Proven on Complex Projects

We specialize in projects that demand a high level of coordination, technical expertise, and problem solving. From combined heat and power plants to wastewater pumping stations, our work across the biogas, biosolids, energy, and industrial sectors is built for long-term performance.
integrated biosolids processing system
Biosolids
Installation of a biosolids processing system converting municipal waste into high-grade fertilizer.
Bluewater-Health-Cogeneration-Facility-
Energy
Installation of a 1 MW combined heat and power plant at the Bluewater Health Hospital campus.
regent park energy center
Energy
Installation of a 4.2 MW combined heat and power plant for the Regent Park Revitalization Project.

Where We Work

Based in St. Clements, Ontario, we serve industrial, municipal, and process-driven facilities throughout 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.

NEED A RELIABLE MECHANICAL PARTNER?

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.