Installation, Repair, & Renovation Services

Founded
1890

tradesmen welding a pipe
Stack Bros.

Midwest's Preferred Mechanical Contractor

For over 130 years, Stack Brothers Mechanical has served the Duluth-Superior region and Upper Midwest with exceptional services relating to the installation, repair, and maintenance of mechanical and HVAC system components.

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Installation, Repair & Maintenance

Stack Bros. Services

HydroVac

HydroVac

We utilize the best hydro-excavator in the game to tackle any project — no matter the size.

Railroad

Railroad Maintenance

Scheduled or on-call inspection services and repairs for smooth operation.
pipefitting

Pipefitting

Both on-site and off-site pipe fabrication and repair services are available.

Boiler

Boilers

We engineer design detail for boiler room and burner systems of all fuel types.

Oil and Gas Services

We provide daily maintenance, new installs, and emergency repairs.
General Contracting

General Contracting

Equipped with a multitude of solutions to service commercial properties.
eletrical

Electrical

Residential, commercial, and industrial electrical services with 24-hour emergency repair.

Plumbing and HVAC

Plumbing & HVAC Services

We have provided Plumbing & HVAC services to Northern WI & MN since 1890.
Civil Engineering

Civil and Concrete

Serviced with the latest, high-tech equipment and well-trained union operators.
Cranes

Cranes

Stack Brothers Mechanical has a multitude of crane equipment for your project.

Installation, Repair & Maintenance

Stack Bros. Services

HydroVac

HydroVac

We utilize the best hydo-excavator in the game to tackle any project — no matter the size.

Railroad

Railroad Maintenance

Scheduled or on-call inspection services and repairs for smooth operation.

pipefitting

Pipefitting

Both on-site and off-site pipe fabrication and repair services are available.

Boiler

Boilers

We engineer design detail for boiler room and burner systems of all fuel types.

Oil and Gas Services

We provide daily maintenance, new installs, and emergency repairs.

General Contracting

General Contracting

Equipped with a multitude of solutions to service commercial properties.

Plumbing and HVAC

Plumbing & HVAC Services

We have provided Plumbing & HVAC services to Northern WI & MN since 1890.
Civil Engineering

Civil and Concrete

Serviced with the latest, high-tech equipment and well-trained union operators.

Cranes

Cranes

Stack Brothers Mechanical has a multitude of crane equipment for your project.

eletrical

Electrical

Residential, commercial, and industrial electrical services with 24-hour emergency repair.

Completed Projects

Explore Our Projects

Inspiring solutions

Why Our Customers Keep Choosing Us

Working with customers to complete their projects on time and within budget is a passion of ours at Stack Bros.

Contact Us For An Estimate

For an estimate on any of Stack Bros’ services, please give us a call or submit a form about your upcoming job.

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