How to start an HVAC business in 2025: The complete guide

Starting an HVAC business is right for you if you have the field experience to get licensed (2 to 5 years in most states), you're willing to handle sales, scheduling and money alongside the technical work, you have 3 to 6 months of living expenses saved, and you can take long days in attics, crawl spaces and on rooftops. If you've been working for someone else and know you can do the work, the business side is learnable.

An HVAC business needs three things to operate legally: EPA Section 608 certification to handle refrigerants (get Universal; the exam costs about $20 to $30), a state HVAC contractor license in most states (an exam, 3 to 5 years of experience, insurance and bonding, and $100 to $500 in fees), and a registered business with an EIN and a local license.

EPA Section 608 certification

This is federally required. You need it to handle refrigerants legally. There are four types:

• Type I: Small appliances
• Type II: High-pressure systems (most residential AC)
• Type III: Low-pressure systems (large commercial chillers)
• Universal: All of the above (get this one)

The exam costs around $20–$30 and is offered through approved testing organizations.

State contractor license

Most states require a separate HVAC contractor license:

• Pass a trade exam covering codes, safety, and technical knowledge
• Show proof of experience (typically 3–5 years)
• Provide proof of insurance and bonding
• Pay licensing fees ($100–$500 depending on your state)

Business registration

• Register your business name with your state
• Get an EIN from the IRS (free, takes 5 minutes online)
• Apply for a local business license from your city or county
• Register for state sales tax if applicable

Pro tip: Check your state's licensing board website. Requirements change frequently, and operating without proper licensing can result in fines or criminal charges.

Most new HVAC businesses should form an LLC ($50 to $500 to file, depending on the state), which protects your personal assets if something goes wrong on a job. Consider an S-Corp once you're earning $60,000 or more in profit; a sole proprietorship is simplest but leaves your personal assets at risk:

• LLC: Best for most new HVAC businesses. Protects your personal assets if something goes wrong on a job. Simple to set up and flexible for taxes.
• S-Corp: Worth considering once you're earning $60,000+ in profit. Can reduce self-employment taxes.
• Sole Proprietorship: Simplest, but your personal assets are at risk. Not recommended.

Budget $3,000 to $7,000 a year to insure a solo HVAC business: general liability, commercial auto, tools and equipment, professional liability, and workers' compensation once you have employees. One bad job without coverage could wipe you out, so get quotes from at least three insurers.

Expect $25,000 to $60,000 in total startup cost: $5,000 to $15,000 for tools such as manifold gauges, a vacuum pump and a recovery machine, a used van at $15,000 to $30,000, and parts, insurance, licensing and initial marketing on top. You don't need everything on day one, and owning a van and tools already cuts the total.

Must-have tools

• Manifold gauge sets (R-410A and R-22)
• Vacuum pump
• Refrigerant recovery machine
• Multimeter and clamp meter
• Combustion analyzer
• Leak detector
• Basic hand tools (wrenches, screwdrivers, pliers)
• Drill and impact driver
• Pipe cutter and flaring kit

Must-have vehicle

A reliable cargo van or enclosed trailer is essential. You can start with a good used van for $15,000–$25,000.

Startup budget breakdown

Total realistic startup cost:$25,000–$60,000

Set your minimum hourly rate from your costs: annual overhead plus the salary you want, divided by your billable hours, which comes to $80 an hour in the example below. Most HVAC techs charge $85 to $150 an hour depending on the market, so don't race to the bottom. How to price HVAC services goes deeper.

Calculate your hourly rate

Start with your costs:

(Annual overhead + desired salary) / billable hours per year = minimum hourly rate

Example

Minimum hourly rate:$80/hour

That's your floor. Most HVAC techs charge $85–$150/hour depending on the market.

Common HVAC service rates (2025)

Research what competitors in your area charge, then price based on the quality and service level you provide.

Land your first HVAC customers with a Google Business Profile set up on day one, home service platforms like Angi, Thumbtack and HomeAdvisor ($15 to $50 a lead), a referral network of real estate agents, property managers, general contractors and other trades, door-to-door tune-up offers in spring and fall, and a vehicle wrap.

Google Business Profile (free and essential)

Set this up on day one. It's how most people find local HVAC companies. Include:

• Professional photos of your work
• Your service area
• Hours of operation
• A link to book appointments

Home service platforms

Platforms like Angi, Thumbtack, and HomeAdvisor can generate leads quickly while you build your reputation. Expect to pay $15–$50 per lead.

Referral network

Build relationships with:

• Real estate agents (they always need HVAC inspections)
• Property managers
• General contractors
• Plumbers and electricians (trade referrals)

Door-to-door (yes, it still works)

In the spring and fall, go door-to-door in neighborhoods offering seasonal tune-ups at a fair price. It's uncomfortable at first, but it fills your schedule fast.

Vehicle wrap

A professional vehicle wrap turns your van into a mobile billboard. Costs $2,000–$5,000 and works around the clock.

Set up two kinds of systems from day one: software for scheduling and dispatching, invoicing and payments, customer history and online booking; and written processes for answering the phone, diagnosing common problems, presenting prices, following up and handling callbacks. Business Genie for HVAC contractors covers the software side in one app.

Software

Modern HVAC businesses run on software. At minimum, you need:

• Scheduling and dispatching: Book jobs and manage your calendar
• Invoicing and payments: Send professional invoices and get paid on the spot
• Customer management: Track service history and follow up
• Online booking: Let customers schedule 24/7

Processes to document

• How you answer the phone
• How you diagnose common problems
• How you present pricing to customers
• How you follow up after jobs
• How you handle callbacks and complaints

Writing these down now will save you enormous headaches when you hire your first employee.

1. Underpricing to win jobs: Competing on price attracts the worst customers and destroys your margins
2. Skipping the business plan: Even a one-page plan forces you to think through the numbers
3. Not tracking expenses from day one: Separate your business and personal finances immediately
4. Trying to serve everyone: Focus on residential or commercial, not both, when you're starting out
5. Ignoring online reviews: Ask every happy customer for a Google review. Your online reputation is your most valuable marketing asset
6. Doing everything manually: Paper scheduling and handwritten invoices waste hours every week

HVAC business income varies based on your market, work ethic, and efficiency. The real money in HVAC comes from building a team and selling installs.

• Get your EPA 608 Universal certification and state contractor license before anything else
• Form an LLC and get proper insurance
• Budget $25,000–$60,000 for startup costs
• Don't underprice your services. Calculate your real costs first
• Invest in your Google Business Profile and online reputation from day one
• Use software to run your operations efficiently