Minnesota HVAC Contractor License Requirements (2026)

The Minnesota Department of Labor and Industry (DLI) Mechanical Contractors program licenses HVAC and refrigeration contractors statewide under Minn. Stat. §326B.46. Unlike the electrician and plumber trades, Minnesota does not require a state-administered trade exam for the HVAC contractor license itself — the program is a bond-and-insurance registration instead. Applicants must register with DLI, post a $25,000 surety bond, carry $300,000 general liability insurance, and follow the Minnesota Mechanical and Fuel Gas Code. Individual technicians handling refrigerants must hold a federal EPA Section 608 certification. Local jurisdictions (notably Minneapolis and St. Paul) may require additional municipal credentials on top of the state license.

Regulatory Oversight

This license is issued and enforced by Minnesota Department of Labor and Industry — Construction Codes and Licensing Division (DLI) pursuant to Minnesota Statutes Chapter 326B (Construction Codes and Licensing). DLI licenses residential building contractors, remodelers, electricians, plumbers, and mechanical (HVAC) contractors statewide; administers the Contractor Recovery Fund; and enforces the Minnesota State Building Code, Electrical Code, and Plumbing Code.

Official portal: https://www.dli.mn.gov/business/licensing-and-registration/
Address: 443 Lafayette Road N, St. Paul, MN 55155
Phone: (651) 284-5005

Who May Apply

At a minimum the applicant has to be 18 years old and supply a valid Social Security Number. No Minnesota residency requirement. Out-of-state HVAC contractors must designate a Minnesota registered agent for service of process.

Good moral character

DLI reviews criminal history and prior license discipline on every application. Prior code violations and unpaid penalties bar registration until resolved.

Background investigation

Mandatory criminal history disclosure on the application; DLI may request court records for disclosed offenses.

Required Experience and Education

There is no published year count for this credential in the cited sources. What actually controls eligibility is Minnesota does not impose a statewide work-experience minimum for the Mechanical Contractor registration. Technicians handling refrigerants must obtain federal EPA Section 608 certification. Some local jurisdictions impose additional journey-level requirements..

Accepted proof of experience or eligibility

Federal EPA Section 608 certification for any technician handling refrigerants
Employer attestation of safe practice compliance
Local municipal credential where applicable (e.g., Minneapolis Class A Warm Air Heating)

Education substitution

Manufacturer factory training and accredited HVAC technology programs are recognized by DLI for technician competency, but are not a statutory prerequisite for the Mechanical Contractor registration itself.

Examination Requirements

Examinations are administered by DLI (no state trade exam required for the Mechanical Contractor registration). The applicant must pass the following examination parts before the license can issue:

Federal EPA Section 608 Technician Certification (required for refrigerant handling, administered by EPA-approved providers) — 50 questions, 120 minutes, passing score 70%

Examination fee: EPA 608 exam fee varies by provider, typically $20 – $40 per core/type section.

Retake policy: EPA 608 certification does not expire; failed sections may be re-taken with the proctoring provider. DLI registration itself has no exam retake rules.

Insurance and Financial Requirements

Licensure is conditioned on filing a $25,000 contractor license surety bond with the DLI.

General liability

Mechanical Contractor registration requires $300,000 general liability insurance under Minn. Stat. §326B.46.

Workers' compensation

Workers' compensation insurance is mandatory in Minnesota under Minn. Stat. §176.181 for any business with employees.

Additional financial requirements

A $25,000 surety bond payable to the State of Minnesota is required at initial registration and renewal. The bond protects against defective work, code violations, and unpaid permit fees.

Licensing Fees

Fee	Amount
Application (non-refundable)	$140
Initial license	$140
Renewal (every year)	$140

Keeping the License Current

Renewal of the Minnesota Mechanical Contractor (HVAC/Refrigeration) comes due every year. As cited, the renewal fee stands at $140. Bond and insurance must remain continuously in force. A gap in either automatically suspends the registration until restored.

Continuing education: No statewide continuing education requirement for the Mechanical Contractor registration. Local jurisdictions may impose CE on municipal credentials.

Downloadable Asset

2026 Minnesota HVAC Contractor License Roadmap (PDF) — a printable step-by-step checklist for the application process.

Download the PDF roadmap →

Reciprocity and License Transfer

The NASCLA Accredited Examination is not accepted by Minnesota for this classification.

Reciprocal State	Accepted Exam	Conditions
Wisconsin	Registration recognition	Bilateral recognition with Wisconsin DSPS for active HVAC contractors in good standing; Minnesota bond and insurance still required.
North Dakota	Registration recognition	Bilateral cooperation with North Dakota for active mechanical contractors.
South Dakota	Registration recognition	Bilateral cooperation with South Dakota for active mechanical contractors.
Iowa	Registration recognition	Bilateral cooperation with the Iowa Plumbing and Mechanical Systems Board for active HVAC contractors.
Illinois	Registration recognition	Bilateral cooperation with Illinois for active HVAC contractors operating in Minnesota.

Because Minnesota does not impose a state trade exam for Mechanical Contractor registration, there is no exam to waive. Reciprocity is administrative: out-of-state contractors in good standing can register in Minnesota by posting the bond, insurance, and registration fee.

Weighing more than one jurisdiction? The national hub compares HVAC Contractor license requirements in every state — exam, bond, fee, and experience thresholds side by side.

Application Process, Step by Step

Form the business entity and register with Minnesota Secretary of State. Obtain an EIN, Minnesota tax ID, and Certificate of Good Standing.
Secure $25,000 surety bond. Post a $25,000 bond payable to the State of Minnesota through a licensed surety company.
Obtain $300,000 general liability insurance. Carry a certificate of insurance meeting the §326B.46 minimum.
Ensure technicians hold EPA 608 certification. Any technician handling refrigerants must pass the federal EPA Section 608 Technician Certification in the appropriate type (Type I, II, III, or Universal).
Submit the DLI Mechanical Contractor registration. File the registration application with the registration fee, bond, proof of insurance, and entity documentation.
Check municipal requirements. Minneapolis, St. Paul, and other first-class cities may require additional local HVAC credentials on top of the state registration.
Maintain annual renewal. DLI Mechanical Contractor registrations renew annually. Bond and insurance must remain active continuously.

Frequent Application Errors

Based on the board's own instructions and the sources cited here, the problems below are what most often stall a Minnesota HVAC Contractor application.

Assuming no license is required

Minnesota has no trade exam, but registration with DLI is still mandatory. Performing mechanical work without a registration, bond, and insurance is a violation of §326B.46.

Letting the bond or insurance lapse

Both the $25,000 bond and the $300,000 GL insurance must remain continuously in force. A single day of lapse suspends the registration automatically.

Skipping EPA 608 for technicians

Every technician who handles refrigerants must hold EPA 608 certification. Federal enforcement is independent of DLI and fines are substantial.

Ignoring municipal requirements

Minneapolis and St. Paul impose additional local HVAC credentials on top of the state registration. Working in those cities without the municipal credential is a separate violation.

Missing the annual renewal

The registration renews every year. A lapse of more than 30 days forces reapplication rather than renewal.

Recommended References

The references below are either cited by the board, used during the application, or standard preparation for the trade. They are listed purely for convenience — CLR earns no commission on any of them.

Minnesota Mechanical and Fuel Gas Code (Minnesota Rules Chapter 1346) — Minnesota Department of Labor and Industry. Primary technical reference; based on the IMC and IFGC with Minnesota amendments.
EPA Section 608 Technician Certification Preparatory Manual — U.S. Environmental Protection Agency / Mainstream Engineering. Federal refrigerant handling certification prep.
Minnesota Statutes Chapter 326B and DLI Mechanical Contractor rules — State of Minnesota. Licensing law reference covering bond, insurance, and registration obligations.

Document Checklist

The items below are the ones worth confirming before the application is filed with DLI:

☐ Minnesota Secretary of State entity registration and Certificate of Good Standing
☐ $25,000 surety bond payable to the State of Minnesota
☐ $300,000 general liability insurance certificate
☐ EPA Section 608 certification for all refrigerant-handling technicians
☐ DLI Mechanical Contractor registration application with $140 fee
☐ Workers compensation coverage certificate (if any employees)
☐ Municipal HVAC credentials where applicable (Minneapolis, St. Paul)

Other Minnesota Trade Licenses

Should the HVAC Contractor path not apply, these other Minnesota trade guides from CLR may help:

Questions Applicants Ask

Does Minnesota require a state HVAC trade exam?

No. Minnesota is unusual among upper-Midwest states in that the Mechanical Contractor registration does not include a state-administered trade examination. Registration is bond-and-insurance based. Technicians handling refrigerants must still hold federal EPA Section 608 certification.

What insurance and bond does a Minnesota Mechanical Contractor need?

A $25,000 surety bond payable to the State of Minnesota and $300,000 general liability insurance under Minn. Stat. §326B.46.

Do individual HVAC technicians need a state license in Minnesota?

No state individual technician license exists for HVAC in Minnesota. Refrigerant handling requires federal EPA Section 608 certification. Some local jurisdictions (Minneapolis and St. Paul) impose additional municipal credentials on individuals.

Does Minnesota reciprocate HVAC contractor registrations?

Yes, administratively. Because Minnesota does not require a state trade exam, out-of-state contractors from Wisconsin, North Dakota, South Dakota, Iowa, and Illinois in good standing can register in Minnesota by posting the bond, insurance, and registration fee.

How often does the Minnesota Mechanical Contractor registration renew?

Annually. Bond and insurance must remain active continuously; a gap in either voids the registration.

Primary Sources

Regulatory requirements on this page are drawn from the official board, statute, and exam-provider materials listed below.

Verified 2026-04-12 · Next scheduled review 2026-07-11