Best Bonded HVAC Contractors in Duluth, MN
55 HVAC contractors registered in Duluth hold current DLI mechanical contractor bonds, verified against official records as of August 18, 2026. Minnesota does not license mechanical contractors - the state requires a contractor bond filed with DLI instead, and that is the credential verified here. The 8 below are the top-ranked, ordered by years bonded.
How we chose: We identified 55 companies registered in Duluth. 55 passed bond verification. The 8 below are the top-ranked of those. Our methodology
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- Verified
- August 18, 2026
- Bonded since
- 2009
- Bond expires
- 2028-07-01
- Phone
- 2183916497
- Verified
- August 18, 2026
- Bonded since
- 2009
- Bond expires
- 2028-08-27
- Phone
- 2187401121
- Verified
- August 18, 2026
- Bonded since
- 2009
- Bond expires
- 2026-09-12
- Phone
- 2187223901
- Verified
- August 18, 2026
- Bonded since
- 2009
- Bond expires
- 2026-08-28
- Phone
- 2183484394
- Verified
- August 18, 2026
- Bonded since
- 2009
- Bond expires
- 2026-09-08
- Phone
- 2186281027
- Verified
- August 18, 2026
- Bonded since
- 2009
- Bond expires
- 2026-09-18
- Phone
- 2187238351
- Verified
- August 18, 2026
- Bonded since
- 2009
- Bond expires
- 2026-10-01
- Phone
- 2187291585
- Verified
- August 18, 2026
- Bonded since
- 2009
- Bond expires
- 2026-10-14
- Phone
- 2186263316
Compare the top 6 at a glance
| Company | Bond | Credential | On file since |
|---|---|---|---|
| R J Mehrman & Sons Inc. | #MB003023 | Mechanical Contractor Bond | 2009 |
| Gartner Refrigeration Company | #MB003219 | Mechanical Contractor Bond | 2009 |
| A W Kuettel & Sons Inc. | #MB003333 | Mechanical Contractor Bond | 2009 |
| Sundland Plumbing & Heating LLC | #MB003345 | Mechanical Contractor Bond | 2009 |
| The Jamar Company | #MB003320 | Mechanical Contractor Bond | 2009 |
| Carlson Bros Inc. | #MB003519 | Mechanical Contractor Bond | 2009 |