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QUALITY WORK 

YOU CAN DEPEND ON

Voted Duluth's Best Plumbing Contractor

Got a project? Give us a call.

O'BRIEN SERVICES

Backflow Testing

We test, fix, and replace both residential & commercial backflow preventers.

Plumbing

We have extensive experience in installing and maintaining commercial & residential plumbing.

HVAC

We pride ourselves on installing and maintaining the most cost-effective HVAC systems.

A.G. O'Brien Commercial and Residential Fire Protection in Minnesota and Wisconsin

Fire Protection

We install many types of fire protection systems in both residential & commercial properties.

Consulting

We provide on-site consultations for both commercial & residential building maintenance.

Building commercial construction?

We have extensive experience. Discuss your project with us: 218–729–9662.

 
 

ABOUT A.G. O'BRIEN

For the past 80 years A.G. O'Brien has led the Northland in providing the highest quality services in Plumbing, HVAC, and Fire Protection.

We pride ourselves in doing work that is second to none, and our portfolio includes projects for the area's biggest businesses and community leaders, including:

UMD

Cirrus

QuikTrip

St. Scholastica

Essentia Health

Clyde Iron Works

Fond Du Lac Band

Lake Superior College

Members Coop. Credit Union

Holy Rosary Church & Campus

Whether you have a small residential project or major commercial construction, you can count on us. You'll get the highest quality work completed on time and on budget.

 

Call us today: 218–729–9662.

I have used A.G. O'Brien several times for my cabin. They were very professional, timely, and upfront with cost. They have replaced a toilet, fixed a frozen sink, installed a new boiler and water heater, and plumbed in our gas for a new fireplace. I will definitely use them in the future.

TESTIMONIALS

A.G. O'Brien re-plumbed a fixer-upper for me, including house trap removal. A big project that was done on time, on budget and with no troubles. Water pressure has been restored and the plumbing is now worry-free.

Treated our church building like it was their own home. Installation was a high efficiency system that runs perfectly. Amazing craftsmanship, planning, estimation came in under budget.

Service was quick, and hot water was restored with minimal disruption. They noticed that my vent wasn't up to code and replaced it, giving me much peace of mind as a landlord. I'll be working with A.G. O'Brien again.

 

PORTFOLIO SAMPLE

 
 

CONTACT A.G. O'BRIEN

CALL US
EMAIL US
VISIT OUR OFFICE
HOURS OF OPERATION

4907 Lightning Dr.

Hermantown, MN 55811

Monday – Friday

8:00 a.m.– 4:30 p.m.

TELL US ABOUT YOUR PROJECT