Wisconsin
HVAC in Wisconsin
45 HVAC companies in its metro areas within about 25 to 35 miles of Milwaukee and Madison – plus how Wisconsin licenses HVAC work.
Metro areas
Wisconsin cities we cover
Wisconsin rules
Do HVAC contractors need a license in Wisconsin?
How Wisconsin licenses HVAC work
HVAC contractors are licensed by the state.
Who licenses: Wisconsin Department of Safety and Professional Services (DSPS)
License types: HVAC Contractor.
Companies: DSPS issues an 'HVAC Contractor' credential, an organization (business) credential regulated under Wisconsin Administrative Code chapter SPS 305; We could not read the rule text or statute to confirm exactly who is required to hold it.
Local rules: We did not verify city or county rules, and could not confirm the statutory basis or any related qualifier or tradesperson credentials, so confidence is medium.
Check a license: license.wi.gov
Search the company on the state LicensE portal (license.wi.gov) to confirm it holds a current HVAC Contractor credential.
Federal rule: in every state, technicians who handle refrigerant must hold EPA Section 608 certification, whatever the state or city requires.
We could not confirm every detail from Wisconsin’s own sources, so treat this as a starting point and check with the agency.
Sources: dsps.wi.gov. Checked October 2026 from official sources. This is not legal advice.
Before you hire
Ask for the license number and check it on the official lookup where one exists. Ask for proof of insurance and a written, itemized estimate, and ask who pulls the permit if the job needs one – a new furnace, heat pump or air conditioner usually does.
Questions
Wisconsin HVAC questions
Do HVAC contractors need a license in Wisconsin?
Wisconsin licenses HVAC contractors statewide through the Wisconsin Department of Safety and Professional Services (DSPS). You can check a license at license.wi.gov.
Where in Wisconsin do you list HVAC companies?
In Wisconsin: Milwaukee (21), Madison (24). Each city page lists companies based within about 25 miles – 35 in smaller metro areas – whose own website names that city or nearby towns.
Do technicians need EPA certification?
Yes, in every state: federal rules require technicians who handle refrigerant to hold EPA Section 608 certification. A state or city license is a separate requirement.
How do I get an HVAC company listed in Wisconsin?
HVAC companies can add their business free. We check every listing against the business’s own website.
Request an HVAC company
Ask us to find an HVAC company in Wisconsin
Tell us the job and your ZIP code. We pass it to listed companies that serve your area.
No heat in freezing weather, or no cooling in dangerous heat? Call a company from the list that says it takes emergency calls – a form is not fast enough. If you smell gas or a carbon monoxide alarm sounds, leave first and call 911 or your gas utility from outside.