Skip to content
State files updated Oct 29, 2026
Look up a contractor
MenuClose

Home / License lookup / Minnesota / The Insulators LLC

Minnesota contractor license

The Insulators LLC

The Insulators LLC of Madelia holds Minnesota license MB797747 (Mechanical Contractor Bond). The DLI file dated Oct 29, 2026 lists it as active.1 It expires Aug 8, 2028.

Doing business as Southern Minnesota Mechanical.

Active

The Insulators LLC, Madelia

License
MB797747
Class
Mechanical Contractor Bond
Expires
Aug 8, 2028
Bond
On file to Aug 8, 2028

DLI file dated Oct 29, 2026

From the DLI file dated Oct 29, 2026. Not a consumer report; check the board before you hire.

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

Bond
On fileto Aug 8, 2028
Liability insurance
Not in the DLI fileCheck with the board
Workers' comp
Not in the DLI fileCheck with the board

What work does this license cover?

License level: Mechanical Contractor Bond. Issued Aug 8, 2022.

What other licenses does this business hold?

Which other Madelia businesses hold Mechanical Contractor Bond?

Minnesota HVAC 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 29, 2026)
  2. Department of Labor and Industry (DLI)