Welcome to Ontario Mechanical, LLC

We are specialty industrial contractors serving the steel, automotive, foundry, manufacturing, utility and process sectors. Our services include industrial ventilation, process piping, fabrication and erection, water jet cutting, and industrial maintenance and repair. Providing industrial solutions for over 30 years, we welcome the opportunity to work with you on your next project!

2880 Park Ave. West
Mansfield, OH 44906

Phone: 419-529-2578
Phone: 800-727-1114
Fax: 419-529-2287

Industrial Ventilation

Industrial air and pollution control design, build, and repair. Specialties include process analysis, airflow testing, fan service, collector maintenance, and complete system (fans, ductwork, cyclones, hoods, dampers, scrubbers, bag houses) support.

Fabrication and Erection

Engineered light and heavy fabrications from sheet metal, steel, and plastic. Capabilities for cutting, breaking/bending, rolling, forming, welding and complete construction, from blueprint design to field installation and support.

Process Piping

ASME certified piping and pressure vessel design, build, install and repair for industrial and commercial customers.

Water jet Cutting

Cutting your parts, prototype or production, on our large-format (12x24) waterjet and thermal cutting systems.

Maintenance & Repair

Keeping your industrial equipment in-service with specialized (and emergency) mechanical repair and support, including blast machines, furnaces, and more...