Hvac Licensing in Michigan

Michigan HVAC License Verification

To legally perform heating, ventilation, air conditioning, and refrigeration (HVACR) work in Michigan, individuals must obtain a Mechanical Contractor license with the appropriate classification. This license is issued and governed by the Michigan Department of Licensing and Regulatory Affairs (LARA), specifically through its Bureau of Construction Codes, Mechanical Division. The Board of Mechanical Rules further contributes by making recommendations for mechanical code rules and issuing licenses.

As of 2026, the general requirements for a Mechanical Contractor license include being at least 18 years old and possessing a high school diploma or GED equivalent. Applicants must also demonstrate a minimum of three years or 6,000 hours of verifiable experience working under a licensed Mechanical Contractor in each specific work classification for which licensure is sought. Educational experience, such as a two-year HVAC program from a recognized trade school or an approved U.S. Department of Labor training program, may count for up to one year of the required experience.

After fulfilling the experience requirements, candidates must pass a licensing examination administered by PSI, achieving a score of 75% or higher. These exams cover a range of topics, including HVAC concepts, safety protocols, the Michigan State Construction Code, and the Skilled Trades Regulation Act. An initial license fee of $300 is required upon application. Furthermore, professionals handling refrigerants are mandated to hold an EPA Section 608 certification. Michigan does not offer HVAC journeyman or master licenses; rather, it categorizes these professionals under the Mechanical Contractor license with various specialty classifications, such as HVAC equipment, ductwork, refrigeration, and different heating and cooling services.

To verify a Michigan Mechanical Contractor license, interested parties can utilize LARA's online database, which allows searches by name, business name, license type, license number, or location.

Insurance and Bonding Mandates

For HVAC contractors operating in Michigan, certain insurance requirements are mandated by the state. Michigan law requires businesses to carry workers' compensation insurance if they employ one or more full-time employees, or three or more employees of any status.

While general liability insurance is not universally mandated by the state for all Mechanical Contractors, it is highly recommended to protect against potential lawsuits, property damage, and other liabilities. Many clients, especially for larger projects, will require proof of general liability insurance. Contractors should confirm with their clients and local jurisdictions regarding any specific insurance minimums or bonding requirements they may have.

Regarding bonding, some sources suggest that contractors might need to provide a surety bond or letter of credit to ensure contractual obligations are met, with amounts varying significantly. It is advisable for mechanical contractors to confirm any specific state or local bonding requirements relevant to their particular scope of work and classification.

Permitting and Local Regulations

Licensed Mechanical Contractors in Michigan are authorized to secure permits for their work. All HVAC installations, alterations, and services must adhere to the Michigan State Construction Code, which includes provisions from the Michigan Mechanical Code. The Bureau of Construction Codes regularly works towards adopting updated codes, such as the International Residential Code and the Michigan Residential Energy Code.

It is crucial for contractors to be aware that in addition to state-level regulations, many cities and counties within Michigan have their own local permitting requirements and specific building codes or amendments that must be followed. Before commencing any project, contractors should consult with the local building department in the jurisdiction where the work will be performed to ensure full compliance with all applicable local ordinances and to obtain necessary permits.

Official Michigan Resources

For the most accurate and up-to-date information regarding HVAC licensing and regulations in Michigan, refer to the following official resources:

Michigan Department of Licensing and Regulatory Affairs (LARA) - Mechanical Contractor Information

Michigan Board of Mechanical Rules

Michigan Bureau of Construction Codes

Michigan LARA License Verification

Directory of Hvac contractors serving Michigan