HVAC Contractor (Business Registration)
Business registration for companies performing heating, ventilation, and air conditioning installation and service in Wisconsin. The business must have an HVAC Qualifier on staff.
How to Get a HVAC Contractor (Business Registration) in Wisconsin
| Issuing Body | WI DSPS |
| Initial Fee | $25 |
| Exam Required | No |
| Experience Required | Business must employ at least one person holding an HVAC Qualifier credential. |
| Application | Apply online → |
License Lookup & Verification
Verify a hvac contractor (business registration) holder's credentials through the Wisconsin DSPS online license lookup tool.
Verify a License →Frequently Asked Questions — HVAC Contractor (Business Registration)
Do I need an HVAC license to install air conditioning in Wisconsin?
Yes. Businesses installing HVAC systems in Wisconsin must be registered as HVAC Contractors with DSPS and must have an HVAC Qualifier on staff. Individual technicians working for a registered contractor do not need their own credential.
Is an EPA 608 certification enough to do HVAC work in Wisconsin?
No. EPA 608 certification is a federal requirement for handling refrigerants, but Wisconsin also requires a state HVAC Contractor registration for businesses performing HVAC installation work. You need both.
Can a plumber do HVAC work in Wisconsin?
Not without separate HVAC credentials. Plumbing and HVAC are distinct credential categories in Wisconsin. Some hydronic heating work may overlap, but generally you need the appropriate credential for each trade.
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