Best Plumbing Companies in the Twin Cities: How to Pick the Right One

To choose a Twin Cities plumbing company, compare the contractor's license, the qualifications and supervision of the people doing the work, the diagnosis, a written scope and price, and warranty terms. Reviews are useful context, but they cannot answer all of those questions.

By Steve Grohn. Published April 22, 2026. Updated November 12, 2026.

A.J. Alberts publishes this hiring guide and is a plumbing contractor serving the Twin Cities. It is a checklist for comparing proposals, not an independent ranking of companies.

Check the contractor and the people doing the work

Ask for the contractor’s license number and who will perform and supervise the work. Minnesota recognizes licensed journeyworker and master plumbers. Registered unlicensed plumbers and registered apprentices may work under the required direct supervision of a licensed journeyworker or master plumber. See the Minnesota Department of Labor and Industry’s licensing guidance. A supervised apprentice is part of the training system, not a reason by itself to reject a contractor.

A.J. Alberts holds Minnesota plumbing contractor license PC150039 and Wisconsin license 226456. Check the license and its scope with the relevant state agency.

Compare diagnosis, price, and scope

Ask each contractor what they found, which repair or replacement options fit the problem, and what each written price includes. A phone estimate may change after an inspection; ask for the reason and approve the scope before work begins. Compare permit responsibility, materials, cleanup, exclusions, and any conditions that could change the total.

You can also ask how technicians and salespeople are compensated. A.J. Alberts has no commissioned salespeople. Whatever a company’s compensation approach, evaluate its explanation and written proposal on their own merits.

Read the warranty

Separate workmanship coverage from the manufacturer’s parts warranty. Ask about duration, exclusions, transferability, and how to make a claim. The A.J. Alberts warranty describes lifetime craftsmanship coverage for installation failures while the customer owns the home, subject to its terms. Manufacturer defects and other exclusions are treated separately.

Use reviews and local knowledge in context

Read recent reviews about work similar to yours, then verify the details that matter for your project. A company name, ownership structure, or rating does not establish who will perform a particular visit or guarantee an outcome. A.J. Alberts has served the area since 1989 and is locally owned today.

For water-treatment decisions, ask what a test includes. Our free basic in-home test does not measure PFAS or establish overall drinking-water safety. PFAS laboratory testing is a separate paid service. Minnesota Department of Health guidance explains when home softening may be useful.

Compare the same details across proposals: credentials, diagnosis, scope, price, and coverage. Call A.J. Alberts at 651-738-0580 or contact us to discuss your plumbing needs.