HVAC Contractor Permit Requirements in Milwaukee, WI
Complete permit and license guide for starting a hvac contractor in Milwaukee, Milwaukee County, Wisconsin.
Not legal advice. Requirements may change — always verify with your local government authority before applying. Last verified: .
Milwaukee / Milwaukee County Requirements
1 requirementCity of Milwaukee — Mechanical Permit
Milwaukee requires a mechanical permit for HVAC installation from the Milwaukee Department of Neighborhood Services (DNS). Contractors must be registered.
Wisconsin State Requirements
1 requirementWisconsin Department of Safety and Professional Services — HVAC Contractor License
Wisconsin requires HVAC contractors to hold a Heating, Ventilating, and Air Conditioning (HVAC) contractor license from the Department of Safety and Professional Services (DSPS). A licensed master HVAC technician must be on staff. State exam and insurance required.
Federal Requirements
2 requirementsEPA Section 608 Technician Certification
Federal law requires all HVAC technicians who purchase or handle refrigerants to be certified under EPA Section 608 of the Clean Air Act. Certification is available in Type I (small appliances), Type II (high-pressure), Type III (low-pressure), and Universal categories. Certification is obtained through an EPA-approved testing organization such as ESCO Institute or NATE.
EIN (Employer Identification Number)
Required if you have employees or operate as an LLC or corporation. Free from the IRS.
Official Sources
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