AI Answers the Phone, You Collect the Check: Can a US HVAC Company Make $1M a Year?

Investors have put well over $175 million into AI that answers the phone for plumbers, electricians and HVAC shops. Avoca alone has raised more than $125 million at a $1 billion valuation, according to Fortune. Can one HVAC company make $1 million a year? Revenue, yes, with about five technicians under the example assumptions below. Profit, rarely: that needs several million in revenue.

What is the HVAC AI opportunity?

The opportunity is the phone. Avoca co-founder Tyson Chen told Fortune: "When a home service business misses a phone call, that could be a $30,000, $40,000 HVAC install they're missing." That is a founder's framing, not a measured miss rate, but it explains why the money is flowing.

Fortune also reports that the HVAC industry was worth about $50 billion in 2025, with some estimates reaching $75 billion by 2032. Labour supply points the same direction. The Bureau of Labor Statistics says heating, air conditioning and refrigeration mechanics and installers held about 440,900 jobs in 2025, with 11% growth projected from 2025 to 2035 and about 40,600 openings a year. A shop that cannot hire another dispatcher or office worker has a reason to try software.

How much can an HVAC company make?

Revenue scales with technicians. Profit scales with margin, and margin is the weak spot. Everything below is an example estimate, not a benchmark and not a promise. The inputs are assumptions: revenue per technician of $200,000 (small and medium) or $250,000 (large), and net margins of 8% to 12%. They are hypothetical inputs chosen for illustration, not benchmarks.

Two things follow. First, a $1 million revenue company is a medium shop, not a windfall: the owner's take is a fraction of that. Second, $1 million in profit at a 10% margin needs about $10 million in revenue, which is a multi-crew operation with managers, trucks and payroll.

For labour context, BLS puts the median wage for these technicians at $61,010 in May 2025, before payroll taxes, vehicles, tools and benefits. The AI case rests on whether a captured call is worth more than the software costs. A captured call helps only if you have a technician with open capacity to run it.

Which companies are already doing this?

Most funded companies in this space sell software to HVAC contractors. They are not HVAC shops. That matters: you are more likely to be their customer than their clone.

One sanity check on scale: $82.1 billion of customer invoicing across about 10,800 customers averages roughly $7.6 million each. That is simple division, skewed by large contractors and covering all trades, not just HVAC. It does show that a $10 million shop is a normal customer for the incumbent software, not an outlier.

What did they do with millions, and what can you do with $5k to $50k?

The funded companies spent venture money on engineering, sales teams and go-to-market. Netic, for example, said it would use its round to expand into more home services, build more customer tools and grow its team. None of that is available to you.

What you can do on a small budget is test the idea behind them. Before buying anything, log every missed or after-hours call for two weeks, and note which ones were installs. Then price a trial of an AI answering tool against hiring a part-time receptionist. Avoca, Netic, Probook and Cactus have not published prices, so get written quotes and ask for a month-to-month term.

Do you need a licence or certification?

Yes. Federal rules and state rules both apply, and HVAC is licensed work. Do not read this article as "no skill needed."

• Federal: The EPA requires Section 608 certification for technicians who maintain, service, repair or dispose of equipment that could release refrigerants. There are four types: Type I (small appliances), Type II (high- and very high-pressure), Type III (low-pressure) and Universal. The EPA says the credentials do not expire. Apprentices are exempt only if a certified technician closely and continually supervises them.
• State: Rules vary, so check your state licensing board. Texas is one example. The Texas Department of Licensing and Regulation charges $115 to apply, requires an exam, requires you to be 18, and requires documented experience (48 months in the past 72, or 12 months of technician certification plus 36 months in the past 48). A Class A licence covers any size unit; Class B covers cooling systems of 25 tons and under and heating systems of 1.5 million BTU per hour and under. Licences last one year.
• Insurance: In Texas, general liability minimums for Class A are $300,000 per occurrence, $600,000 aggregate and $300,000 for products and completed operations. Class B minimums are $100,000, $200,000 and $100,000.

If you do not hold the credentials yourself, you generally need to hire someone who does. That decides whether you are buying a job or building a company.

How much does it cost to start?

Costs depend on your state, whether you buy new or used, and whether you finance. The only startup figures given here are the Texas application fee and the Texas insurance minimums above. Everything else below needs quotes from local suppliers and insurers.

How do you start an HVAC company, step by step?

1. Check the credential path. Confirm what your state requires for your work, using your state licensing board.
2. Get EPA Section 608 certification for yourself and any technician who will handle refrigerant.
3. Document your experience. In Texas, a supervising licensed contractor completes the experience form for you.
4. Form the business and get insured with the coverage your state requires.
5. Pick a narrow offer: residential repair and tune-ups, installs, or light commercial.
6. Set up one system for calls, quotes, jobs and invoices.
7. Answer every call. Use a person, a trial of an AI tool, or both, and log the results.
8. Track a few numbers weekly: calls answered, jobs booked, average ticket and revenue per technician.
9. Hire the second technician only when booked out two to three weeks.
10. Review the margin monthly before adding trucks or software.

Which free tools and resources can you use?

Most of the useful resources here are free reference material, not free software.

Free plan limits for AI phone tools were not published. Budget for paid software once call volume is real.

How can you use AI in an HVAC company?

Use it where a human is the bottleneck: the phone, scheduling and follow-up. The vendors above list these uses: answering inbound calls, booking jobs, following up on estimates, qualifying callers and running dispatch.

Keep a person in charge of quoting installs, safety questions and anything that touches a refrigerant. The vendor outcome claims in this article, such as Probook's report of an Indiana customer with 260 technicians booking 2,542 jobs in a month with no human touching the booking, are company-reported and secondhand. Ask any vendor for references from a shop your size.

To scale, go in this order: capture more calls, book more of them, add a technician, then add a dispatcher. Per BLS, 68% of these technicians work for plumbing, heating and air-conditioning contractors, so you will compete with established shops for hires. Software cannot add technicians. When every technician is booked, a better phone system only lengthens the queue.

What are the risks?

The main risk is failure. BLS reports that of construction establishments born in March 2013, 53.9% were still operating after five years and 40.1% after ten. The first-year drop in construction was 24.0 percentage points, the sharpest of any industry. These figures cover all construction, not HVAC alone.

Other risks: thin margins, payroll before cash, licence lapses, and paying for software before you have call volume. None of the figures here predict what any one company will earn.

What's still unclear?

• Margins. The 8% to 12% range in the math is an assumption, not a benchmark. Your real number could be lower.
• Missed-call rates. Chen's $30,000 to $40,000 install is an illustration, not a measured rate.
• Funding details. Fortune gives Avoca's total and lead investors but not per-round amounts. The $34 million and $6 million split for Probook comes from a single outlet.
• Results. Vendor outcome claims are company-reported and not independently confirmed.
• Prices. The AI vendors have not published prices.

This is research, not legal, tax or financial advice.