- For the HVAC Qualifier exam: at least 1,000 hours a year for at least 4 years supervising or doing HVAC design, installation, service or maintenance, or 4 years in an HVAC-related school program, or a mix of both adding up to 4 years.
- Every four years for both the HVAC Contractor and the HVAC Qualifier, with no continuing education required.
Do you need a state license in Wisconsin?
Wisconsin licenses some HVAC work at the state level and leaves the rest alone. Which side of that line a job falls on decides whether you need the state license.
State law bars a city, village, town or county from requiring its own HVAC license or approval unless it already required one before November 1, 1993.
Wisconsin license types for HVAC work
Wisconsin splits the work into 2 licenses. Pick the one that matches the jobs you take, since working outside its scope is the same as working without one.
| License | What it covers |
|---|---|
| HVAC Contractor | Organization credential that registers a business installing or servicing HVAC equipment. No exam |
| HVAC Qualifier | Voluntary individual certification, earned by passing an exam |
Steps to get licensed in Wisconsin
- Set up an organization account in LicensE.
- Apply for the HVAC Contractor credential ($15 application plus $160 credential fee). No exam is required.
- If you want the HVAC Qualifier, document your 4 years of experience or schooling and apply for licensure by examination.
- Pass the open book qualifier exam.
- Renew both every four years.
Experience and other requirements
Experience. For the HVAC Qualifier exam: at least 1,000 hours a year for at least 4 years supervising or doing HVAC design, installation, service or maintenance, or 4 years in an HVAC-related school program, or a mix of both adding up to 4 years.
The license to apply for. HVAC Contractor registration (business), with the optional HVAC Qualifier (person).
Wisconsin HVAC exams
Trade exam. No exam for the HVAC Contractor registration. The HVAC Qualifier exam is open book with a 70 percent passing score, given at DSPS or Pearson sites in Wisconsin.
Business and law exam. The official pages we read do not say. Check with the board (official site).
Separate from any state license, the EPA requires Section 608 certification for anyone who works on equipment with refrigerant. It is federal and applies in every state.
What it costs in Wisconsin
The board lists 6 fees along the way. These are the state's own numbers. Insurance, any bond, exam prep and your business registration come on top.
| Fee | Amount |
|---|---|
| HVAC Contractor application fee | $15 |
| HVAC Contractor credential fee | $160 |
| HVAC Qualifier application fee | $15 |
| HVAC Qualifier credential fee | $60 |
| Reinstatement after a lapse | $200 |
| HVAC Qualifier exam at Pearson | $95 to Pearson plus $25 to DSPS |
Insurance and bond
Insurance. The official pages we read do not say. Check with the board (official site).
Bond. The official pages we read do not say. Check with the board (official site).
Renewal and licenses from other states
Renewal. Every four years for both the HVAC Contractor and the HVAC Qualifier, with no continuing education required.
Reciprocity. The official pages we read do not say. Check with the board (official site).
Good to know in Wisconsin
- Anyone handling refrigerant also needs federal EPA Section 608 certification.
- Applications and renewals go through the state LicensE portal at license.wi.gov.
- The HVAC Contractor application must be filed by the owner, a partner, the board chair or the chief executive officer.
- Working without registering can bring a forfeiture of $50 to $1,000 for each installation or service call.
After you are licensed
The license lets you take the work. Getting the work is the next job.
- Register the business. If you work under a name other than your own, register it where your state asks (often the Secretary of State, sometimes the county), and keep the name the same on your license, your truck and your invoices.
- Claim your Google Business Profile. It is the listing people see when they search for HVAC repair near them. Fill in your service area, hours and real photos of your work.
- Put up a website that shows the license. Customers look for it before they call. Koira builds a contractor website for you and keeps it current.
- See where you stand. The free Koira report checks how your business shows up in search and on maps against shops near you.
Where this comes from
Every fact on this page comes from the Wisconsin Department of Safety and Professional Services (DSPS) and the official pages below, checked October 8, 2026. Fees and rules change, so confirm with the board before you file.
More for your trade: how HVAC companies run on Koira.