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State files updated Oct 31, 2026
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Minnesota contractor license

All Service Heating LLC

All Service Heating LLC of Duluth holds Minnesota license PC648160 (Plumbing Contractor). The DLI file dated Oct 31, 2026 lists it as active.1 It expires Dec 31, 2027.

Doing business as KB Plumbing & Heating.

Licensed 14 years, longer than 53% of 43 active Duluth plumbing contractors.

Active

All Service Heating LLC, Duluth

License
PC648160
Class
Plumbing Contractor
Expires
Dec 31, 2027

DLI file dated Oct 31, 2026

From the DLI file dated Oct 31, 2026. Not a consumer report; check the board before you hire.

Has the board taken action on this license?

The DLI file doesn't list board actions. Check with the board: DLI license lookup

What bond, insurance and workers' comp are on file?

Bond, liability insurance and workers' comp aren't in the DLI file. Check with the board

What work does this license cover?

License level: Plumbing. Issued Apr 18, 2012.

What other licenses does this business hold?

Which other Duluth businesses hold Plumbing Contractor?

Minnesota plumbing contractors

What should you check before hiring?

What to ask before you hire

  1. Get the license number in writing. The name on the license should match the name on your contract and invoice.
  2. Check the class covers the job. A license for one trade doesn't cover another. Minnesota license classes
  3. Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
  4. Ask who will be on site. If a crew works on your property, ask for proof of workers' comp. The DLI file doesn't record workers' comp, so ask for the certificate.
  5. Put it in a written contract: license number, price, start date and payment schedule. Check the license again on the day you sign.

If the license is lapsed

  1. Don't sign or pay a deposit until the DLI shows the license active again.
  2. Ask the contractor why. For a bond or insurance lapse, ask for proof that the new bond or policy was filed with the DLI, then check again.
  3. If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Department of Labor and Industry (DLI).
  4. Check another contractor. Minnesota license lookup

Sources

  1. DLI license and registration export (dli.mn.gov, Oct 31, 2026)
  2. Department of Labor and Industry (DLI)