Do you need a state license in Indiana?
Indiana does not issue a statewide HVAC license. Any license you need comes from the city or county where the job is, so the rules can change from one town to the next.
The state guide says contractor licensing for trades other than plumbing is a local option, so rules vary by city and county. The Indiana Attorney General also says to check with your city or county building department.
How to get set up in Indiana, step by step
- Call the building department for each city or county where you plan to work.
- Meet its license, bond and insurance rules.
- Get EPA 608 certification for refrigerant work.
- Use a written contract for home improvement jobs over $150.
- Wait for any required local permit before starting work.
What it costs in Indiana
There is no state license fee for HVAC work in Indiana. Ask the city or county where you work about any local fees.
Good to know in Indiana
- Indiana law requires home improvement contracts over $150 to be in writing.
- Many localities require a permit before work starts.
- EPA Section 608 certification is a federal requirement for anyone who handles refrigerant.
Once you are cleared to work
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 official pages below, checked October 8, 2026. Fees and rules change, so confirm with your city or county before you file.
More for your trade: how HVAC companies run on Koira.