- Journeyperson: four years as an apprentice in a U.S. Department of Labor registered apprenticeship, then the exam. Master: a journeyperson license plus two years of work experience, or a master license from another jurisdiction.
- Plan for a trade exam.
- $5,000 surety bond for the contractor license.
- All licenses run on a shared three-year cycle (July 1, 2026 to June 30, 2029). Licenses expire June 30 but stay valid through August 31. At least 8 hours of classroom continuing education each three-year term.
Do you need a state license in Iowa?
Iowa licenses HVAC work at the state level through the Iowa Department of Inspections, Appeals and Licensing, Plumbing and Mechanical Systems Board. Below is what the board asks for, in the order you will run into it.
Iowa license types for HVAC work
Iowa splits the work into 5 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 |
|---|---|
| Contractor | The business license. Needs a master of record in the discipline. |
| Master | Top individual license in a discipline such as HVAC, refrigeration, hydronic or sheet metal. |
| Journeyperson | Licensed worker in a discipline. |
| Apprentice | Trainee working toward journeyperson. |
| Service Technician HVAC | Specialty license for HVAC service work. |
Steps to get licensed in Iowa
- Register as an apprentice and complete a four-year registered apprenticeship.
- Apply for exam approval ($35 per discipline), then pass the journeyperson exam at Kirkwood Community College.
- Get the journeyperson license and work two more years.
- Pass the master exam and get the master license.
- For the contractor license, name a master of record, file $500,000 liability insurance, a $5,000 bond and workers' compensation proof if you have employees.
- Complete contractor registration with DIAL and renew every three years with 8 hours of continuing education.
Experience and other requirements
Experience. Journeyperson: four years as an apprentice in a U.S. Department of Labor registered apprenticeship, then the exam. Master: a journeyperson license plus two years of work experience, or a master license from another jurisdiction.
The license to apply for. Mechanical Contractor License (HVAC discipline).
Iowa HVAC exams
Trade exam. Iowa Plumbing and Mechanical Systems Board journeyperson and master exams for each discipline, given by Kirkwood Community College at testing sites around the state.
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 Iowa
The board lists 9 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 |
|---|---|
| Exam approval application, per discipline | $35 |
| Exam fee paid to Kirkwood (master page) | $95 |
| Exam fee paid to Kirkwood (journey page) | $99 |
| Contractor license, full three-year period | $250 |
| Contractor registration, paid with the contractor license | $150 |
| Master license, full three-year period | $240 |
| Journeyperson license, full three-year period | $180 |
| Apprentice license, full three-year period | $50 |
| Paper application fee | $25 |
Insurance and bond
Insurance. Contractor needs public liability insurance of at least $500,000 from an insurer licensed in Iowa. Workers' compensation proof if you have one or more employees.
Bond. $5,000 surety bond for the contractor license.
Renewal and licenses from other states
Renewal. All licenses run on a shared three-year cycle (July 1, 2026 to June 30, 2029). Licenses expire June 30 but stay valid through August 31. At least 8 hours of classroom continuing education each three-year term.
Reciprocity. Iowa has a reciprocity agreement with South Dakota, but it covers journeyperson and master plumbing licenses only. A master license in the same discipline from another jurisdiction can also qualify you for the Iowa journeyperson license, or to sit for the Iowa master exam.
Good to know in Iowa
- Contractors also need Iowa contractor registration (Iowa Code chapter 91C), including an unemployment insurance number even with no employees.
- Fees are prorated by how much of the three-year cycle is left when you apply.
- A master can be master of record for only one contractor per discipline without board approval.
- EPA Section 608 certification is a federal requirement for anyone who handles refrigerant.
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 Iowa Department of Inspections, Appeals and Licensing, Plumbing and Mechanical Systems Board 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.