State · WI
Wisconsin trade licensing
Wisconsin DWD is an SAA and registers apprenticeships directly. DSPS licenses electricians and plumbers at the state level. HVAC is regulated at the municipal level in most Wisconsin cities; state HVAC contractor registration and credential categories exist but vary by scope of work. Editorial content cites DSPS and DWD records verified April 2026.
Primary regulator
Wisconsin Department of Safety and Professional Services (DSPS)
dsps.wi.gov →608-266-2112
Licensing boards by trade
hvac
DSPS HVAC (regulated locally; state registration varies)
dsps.wi.gov/Pages/Industry-Services/HVAC/Default.aspx →Pick a trade in Wisconsin
Aircraft Mechanic (A&P)
Services and inspects airframes and powerplants on aircraft: general aviation, airline, military.
Auto Body Technician
Repairs collision damage: panel replacement, frame straightening, refinishing.
Automotive Service Technician
Diagnoses, maintains, and repairs cars and light trucks: gasoline, diesel, and electric.
Boilermaker
Builds, installs, and repairs boilers, pressure vessels, and large tanks.
Carpenter
Frames, finishes, and builds structures from wood, steel, and composite materials.
Diesel Mechanic
Services and repairs diesel engines in trucks, buses, and heavy equipment.
Electrician
Installs and maintains electrical systems in homes, commercial buildings, and industrial sites.
Elevator Constructor
Installs, modernizes, and services elevators, escalators, and moving walkways.
Glazier
Cuts, installs, and replaces glass in windows, storefronts, curtain walls, and skylights.
Heavy Equipment Mechanic
Services construction, mining, agricultural, and material-handling machinery.
HVAC Technician
Installs, maintains, and repairs heating, ventilation, air conditioning, and refrigeration systems.
Industrial Maintenance Technician
Keeps manufacturing equipment running: mechanical, electrical, and control system upkeep.
Ironworker
Erects structural steel, reinforces concrete with rebar, and installs metal decking and ornamental iron.
Machinist
Makes precision metal parts using manual and CNC machine tools.
Mason
Lays brick, block, and stone for walls, foundations, chimneys, and veneers.
Millwright
Installs, aligns, dismantles, and repairs heavy industrial machinery.
Operating Engineer
Operates heavy construction equipment: cranes, excavators, dozers, graders, loaders.
Plumber
Installs and repairs water, waste, gas, and drainage systems in buildings.
Sheet Metal Worker
Fabricates and installs ductwork, roofing, cladding, and architectural sheet metal.
Welder
Joins and cuts metal using arc, MIG, TIG, stick, and oxy-fuel processes.