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How to Start a HVAC Business

What it takes to legally start a hvac business in the US — licensing, structure, EIN, taxes, insurance, and your first customers. The steps are the same everywhere; the forms and fees depend on your state, so pick yours below for the exact links.

Typical startup cost
$10,000–$40,000 (tools, gauges, recovery equipment, van, license, insurance)
Licensing
state + local — varies
Best structure
LLC for most
First customers
referrals + local search

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  1. Check the licensing for hvac work

    Most states require an HVAC or mechanical contractor license; the federal EPA Section 608 certification is required to handle refrigerant nationwide. This is the part that varies most by state — some require a state license or registration before you can advertise, others leave it to the city or county. Confirm both your state board and your local government before you take a job.

  2. Decide what the business needs to open

    Heating, ventilation, and air-conditioning install and repair, with strong seasonal demand. The setup areas that usually matter for a hvac business: State HVAC/mechanical license, EPA 608 certification, Liability insurance, Equipment financing partner, Maintenance-plan pricing. Typical cost to get operational: $10,000–$40,000 (tools, gauges, recovery equipment, van, license, insurance).

  3. Pick a structure — sole proprietor or LLC

    You can start as a sole proprietor with no filing, or form an LLC (usually $50–$300 depending on your state) for liability protection. For hands-on trade work where something can go wrong on a customer's property, most owners choose the LLC.

    LLC filing fee and steps by state ↗

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  4. Get a free EIN from the IRS

    An Employer Identification Number is free and takes a few minutes online. You need it to open a business bank account and to hire.

    IRS — Apply for an EIN ↗

  5. Register for state taxes and get insurance

    Register with your state's tax agency if you'll collect sales tax, then line up general liability insurance — most contracts and license boards require proof of coverage.

  6. What hvac businesses charge

    Diagnostic fee $85–$150, then flat-rate repairs ($200–$1,500) or system replacement ($5,000–$14,000 installed). Maintenance plans at $150–$300/yr per system are the recurring-revenue engine. Sharply seasonal — first heat wave and first cold snap create weeks of backlog. Pre-season maintenance marketing (April, September) and financing offers on replacements are what level the year out.

  7. Get your first hvac customers

    Google + reviews, home-service marketplaces, and partnerships with home inspectors and realtors. Maintenance agreements create predictable revenue. Seasonal marketing (pre-summer, pre-winter) and financing offers convert bigger jobs.

    Getting customers for a hvac business ↗

  8. The mistake most first-year hvac owners make

    Chasing installs and ignoring maintenance agreements. The install revenue is lumpy and seasonal; the maintenance base is what pays you in the shoulder months and feeds you the replacement leads.

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Frequently asked

How do I start a hvac business?

Check the licenses for hvac work in your state, pick a structure (sole proprietor or LLC), get a free EIN from the IRS, register for state taxes, open a business bank account, get general liability insurance, then set up a Google Business Profile and line up your first jobs. The order and the exact forms depend on your state.

Do I need a license to start a hvac business?

Most states require an HVAC or mechanical contractor license; the federal EPA Section 608 certification is required to handle refrigerant nationwide.

How much does it cost to start a hvac business?

Plan for $10,000–$40,000 (tools, gauges, recovery equipment, van, license, insurance) to get operational, plus $50–$300 if you form an LLC (varies by state). An EIN is free, and general liability insurance runs a few hundred dollars a year for most solo operators.

What should I charge for hvac?

Diagnostic fee $85–$150, then flat-rate repairs ($200–$1,500) or system replacement ($5,000–$14,000 installed). Maintenance plans at $150–$300/yr per system are the recurring-revenue engine.

How much do hvac businesses make?

It depends on your rates, your utilization, and your area. See the income and pricing breakdown for a hvac business for typical owner take-home and what to charge.

How much does a hvac business license cost?

It depends on your state and exactly which license applies — a state professional license commonly runs $50–$300 plus any exam or renewal fee, and a local city/county business license is often another $25–$100. That's separate from the $50–$300 LLC filing fee if you form one. Use the License Finder tool with your state for the exact fee for hvac work.

How much does hvac business insurance cost?

General liability insurance for a solo hvac operator typically runs $300–$800 a year, more with commercial auto coverage or a higher liability limit. Most contracts, landlords, and license boards require proof of coverage before you can start.

Where do the first hvac customers come from?

Google + reviews, home-service marketplaces, and partnerships with home inspectors and realtors.

Official sources

Fees and timelines are commonly-cited figures last reviewed September 2026 and can change — always confirm on the official site. This is educational information, not legal or tax advice.

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AI-generated guidance is for educational purposes only and is not legal, tax, or investment advice. Disclosures · Trust center