How to Start an HVAC Business in Tennessee (2026)
Key takeaways
- EPA 608 (federal) is required everywhere, including Tennessee.
- The defining Tennessee rule is the $25,000 threshold: any HVAC project (labor + materials) of $25,000 or more needs a state Mechanical Contractor license (CMC or CMC-C) from the Tennessee Board for Licensing Contractors.
- Work under $25,000 doesn't need the state license, but you must meet local municipal or county HVAC licensing where you work.
- Your TN LLC is filed with the Secretary of State; Tennessee charges an annual report fee, and construction employers need workers' comp from the first employee.
What do you need to start an HVAC business in Tennessee?
Four pieces: your federal certification, the right Tennessee license for your job size, a registered business, and insurance. The trade you already know — this is everything around it.
| Requirement | Tennessee specifics |
|---|---|
| EPA 608 certification | Federally required to handle refrigerant. Depending on the type of equipment you're working on, you need either Type I, II, III or Universal. Does not expire. |
| TN HVAC license | State Mechanical Contractor (CMC, or CMC-C for HVAC/refrigeration) for any project $25,000+; local municipal/county HVAC licensing for smaller work. |
| TN LLC | Articles of Organization filed with the TN Secretary of State. |
| EIN | Free from the IRS, same day. |
| Insurance | General liability; workers' comp from your first employee (construction rule); the Contractor license also requires proof of insurance. |
How do you get an HVAC license in Tennessee?
Tennessee's system turns on one number — $25,000. The Tennessee Board for Licensing Contractors issues the state Mechanical Contractor license, and whether you need it depends on the total cost of the project, labor and materials combined.
| Under $25,000 | $25,000 and over | |
|---|---|---|
| Applies to | Smaller HVAC installs, service & repair | Any HVAC project of $25,000 or more |
| License | No state Contractor license — local municipal/county HVAC license | State Mechanical Contractor (CMC, or CMC-C for HVAC/refrigeration only) |
| Experience | Set locally (often journeyman/master path) | Verifiable HVAC experience; CMC requires board pre-approval to test, CMC-C does not |
| Exams | Local requirement varies | Business & Law exam + trade exam (via PSI) |
| Financials | None at state level | Reviewed financial statement that sets your monetary limit |
| Local business license | Required | Required |
The state Contractor license must be in hand before you bid or offer a price on a $25,000-or-more job. Note the difference from a state like South Carolina, which uses low residential and commercial dollar tiers — Tennessee sets a single $25,000 line, and smaller HVAC work is handled at the local level. You can verify any Tennessee contractor license through the Board's online license search.
Residential remodeling note: If your HVAC work is part of a residential remodeling contract of $3,000–$24,999, some Tennessee counties require a Home Improvement license on top of local licensing. Check whether the county you work in has adopted it before you sign.
Registering your HVAC business in Tennessee
Once your license path is set, forming the business itself is straightforward:
- Choose and check your business name against the TN Secretary of State's records.
- The Articles of Organization — filed with the TN Secretary of State, online.
- Your registered agent (you can be your own for free, or use a service).
- Your federal tax ID (EIN) — free from the IRS — same day.
- Open a business bank account and set up bookkeeping.
- Get your local business license — Tennessee cities and counties generally require one.
Tennessee requires an annual report for your LLC each year (a per-member fee with a set minimum), filed with the Secretary of State. And because HVAC is construction work, Tennessee requires workers' compensation coverage from your first employee — verify the current construction rule before you hire.
How much does it cost to start an HVAC business in Tennessee?
| Cost | Range (TN, 2026) |
|---|---|
| TN LLC (Articles of Organization) | State filing fee (per-member) |
| TN annual report | Per-member fee with a set minimum |
| EIN | Free |
| EPA 608 exam | $20–$150 |
| State Mechanical Contractor license (exams + application, $25k+ work) | See the TN Board for Licensing Contractors |
| General liability insurance | $500–$2,000/yr |
| Tools, vehicle, inventory, marketing, working capital | The bulk of your budget — see the full HVAC guide |
| Lean realistic total | ~$20,000–$30,000 |
The formation and licensing pieces are small; the real budget is your vehicle, tools, insurance, and working capital. For the full itemized receipt, see How to Start an HVAC Business.
Getting your first HVAC customers in Tennessee
Once you're licensed and set up, your first jobs come from being findable locally — not from a big ad budget. Set up a Google Business Profile for your service area (Nashville, Memphis, Knoxville, Chattanooga, or the Tri-Cities), ask every happy customer for an honest review, build relationships with local supply houses, and take on overflow or subcontract work from established Tennessee HVAC companies to start. Seasonal maintenance agreements are the best way to build steady, recurring revenue through Tennessee's humid summers and cold winters.
Before you file: Tennessee's $25,000 threshold, license classifications, and fees can change, and local municipal/county HVAC and business-license rules vary by location. Always confirm the current requirements directly with the Tennessee Board for Licensing Contractors (tn.gov/commerce), the Tennessee Secretary of State, and your local jurisdiction before you rely on any figure here.
Want it all handled — in Tennessee?
You bring the HVAC skill. Trades of America gets your entire Tennessee business running — business setup, banking, bookkeeping, website, phone, and marketing — so you can start taking calls in about a week and own 100% of it.
See Done-For-You HVAC Setup →Frequently asked questions
What license do you need for an HVAC business in Tennessee?
Federal EPA 608, plus the right level of licensing for the job. Any HVAC project of $25,000 or more (labor + materials) needs a state Mechanical Contractor license (CMC, or CMC-C for HVAC/refrigeration only) from the Tennessee Board for Licensing Contractors. Work under $25,000 doesn't need the state license, but you must meet local municipal or county HVAC licensing. Confirm current rules with the Tennessee Board for Licensing Contractors.
What's involved in registering a business in Tennessee?
The Articles of Organization go to the TN Secretary of State, a registered agent is named (that can be you), and the IRS issues the EIN free. You remain the applicant on every filing. Tennessee charges an annual report fee each year (per-member, with a minimum), and a local city or county business license is generally required.
Do you need workers' compensation for an HVAC business in Tennessee?
Yes — Tennessee requires workers' comp for construction-industry employers regardless of employee count, so an HVAC business with even one employee generally needs a policy. Non-construction businesses aren't required to carry it until five employees. Verify the current construction rule before you hire.
How long does it take to start an HVAC business in Tennessee?
Once you hold EPA 608 and the licensing your job size requires, doing the setup yourself takes weeks or months, or about a week done for you when everything is run in parallel. Earning the state Contractor license is the longer variable — a Business and Law exam, a trade exam, and a reviewed financial statement that sets your monetary limit.
Written by Nick Martin, founder of Trades of America, based in the Upstate of South Carolina. Last updated July 2026. Licensing thresholds and fees are current-2026 estimates — always verify with the Tennessee Board for Licensing Contractors, the Tennessee Secretary of State, and your local jurisdiction before filing.