How do you start an HVAC company in 2027?

The outcome you should expect

A disciplined solo owner-operator who launches with a used service van, EPA 608 Universal certification, and a valid state contractor license generally lands their first paying job somewhere between three and nine months after starting the licensing process — and the spread inside that range is almost entirely about which state you are in, not how hard you hustle. In a municipal-license state, you can register an LLC, pull a city mechanical license, bind insurance, and be dispatching within a few weeks. In California, the CSLB C-20 pathway alone — documented experience verification, law-and-trade exams, bond filing, fingerprinting — routinely consumes four to seven months before the license number is issued. Texas, Florida, North Carolina, and Georgia sit in the middle: documented experience requirements of roughly two to four years, an exam, a bond, and proof of insurance.

Year one revenue for a competently run single truck lands in the $280,000–$580,000 band. That number is a function of a very simple arithmetic: six to ten service calls per day at a $400–$1,400 ticket, plus a handful of replacement installs at $5,000–$22,000 each, times whatever fraction of the year you actually keep the truck moving. The reason the range is so wide is seasonality and dispatch discipline. A founder who works only inbound calls in July and August and goes quiet in April will land near the bottom. A founder who builds a maintenance-agreement base and fills shoulder seasons with tune-ups and indoor air quality work will land near the top.

Gross margin on service tickets should run 52–68%. Install gross margin is structurally lower — 28–42% — because equipment is 45–55% of the sale price and you cannot mark up a Carrier condenser the way you mark up a $12 capacitor and ninety minutes of diagnostic skill. Net margin after owner compensation, at maturity, lands 12–28% on $400,000–$1,100,000 of revenue per truck. The $1,000,000-per-truck figure is the benchmark private-equity-backed shops chase; independents who hit it are doing something specific and repeatable, not getting lucky.

Set a realistic expectation about what year one actually feels like. You are not running a company yet — you are a technician who also does bookkeeping, answers the phone at 9 p.m., argues with a distributor about a backordered coil, and learns that a permit inspection scheduled for Tuesday means you cannot take a Tuesday service call. The transition from "skilled tech with a truck" to "owner of a business that runs without me in it" is the actual project, and it takes most people two to four years. Anyone selling you a faster version is selling you something.

What drives that outcome

Four variables dominate. The first is your credential stack, because it is a hard gate — no license, no legal work, no exceptions, and no amount of demand fixes it. EPA Section 608 is federally mandatory for anyone who purchases or handles refrigerant. Type I covers small appliances, Type II high-pressure unitary systems (the residential split systems that will be most of your work), Type III low-pressure chillers. Take the Universal exam and be done with it; the incremental cost over Type II is trivial and the optionality is real. ESCO Institute, RSES, ACCA, and Mainstream Engineering all administer it, generally in the $25–$150 range for a few hours of testing.

The second is service mix, which determines nearly everything downstream about ticket count, seasonality, and margin. Repair and diagnostic work is your volume engine and your lead generator — roughly 18–32% of repair calls on systems older than twelve years convert into a replacement quote, which means every service call is also a soft sales call whether you treat it that way or not. Replacement installs are your gross-margin-dollar events: $1,600–$7,000 of gross per ticket, driven by system age, SEER2 upgrades, and the R-22 phase-out tail. Maintenance agreements at $189–$329 per system per year carry 60–80% gross margin and, more importantly, produce customers who are meaningfully more likely to call you rather than a competitor when the compressor dies.

The third is labor, and it is the constraint that will define your ceiling. The Bureau of Labor Statistics projects roughly 38,500 HVAC openings per year through 2032 against a new-graduate pipeline substantially smaller than that. Trade turnover is chronic. A senior technician with five to fifteen years of experience, 608 Universal, and NATE certification costs $50,000–$95,000 base plus an 8–20% spiff, benefits, and a take-home truck — call it $145,000–$170,000 fully loaded in a top metro. You will feel that number the first time a good tech leaves for a private-equity-backed competitor offering four dollars more an hour.

The fourth is customer acquisition cost, which has moved sharply against new entrants. Google Local Service Ads are the dominant channel in the large majority of US metros and now run roughly $25–$95 per lead, against $8–$22 in 2019. That inflation is structural — more bidders, better-capitalized bidders — and it means the arithmetic of a new shop is different from the arithmetic your mentor experienced. If you pay $60 for a lead, book 70% of them, and close 25% into a $900 ticket, your acquisition cost per job is roughly $85 against $500 of gross profit. That works. It works much less well if your CSR books 40% instead of 70%, which is why the phone-answering discipline is not a soft skill.

Benchmarks and realistic ranges

Capital first. A solo owner-operator doing residential service and install needs $80,000–$200,000 all in. The line items: a used Ford Transit, Mercedes Sprinter, Ram ProMaster, or Nissan NV with 50,000–90,000 miles at $25,000–$45,000, or a new van at $55,000–$85,000; shelving upfit and a branded wrap at $2,000–$5,000; a refrigeration and electrical tool kit at $15,000–$30,000; opening parts inventory at $8,000–$25,000; licensing, bond, and first-year insurance; a field service management subscription; a Local Service Ads budget; and six months of working capital so a slow April does not end the business. A two-to-three-truck shop launching with a leased warehouse, an apprentice, and a customer service rep runs $400,000–$1,500,000.

The tool list is specific enough to budget against. A recovery machine runs roughly $1,000–$2,000. Digital manifold gauges — Fieldpiece SMAN or Testo 550 class — $400–$900. A micron gauge $150–$400. A combustion analyzer, which you need the moment you touch gas-fired equipment, $700–$1,500. A quality leak detector $400–$800. A Fluke 87V or equivalent multimeter $400–$600. Vacuum pump, nitrogen regulator, torch and brazing kit, recovery cylinders, gauges, and hand tools fill in the rest. Add $8,000–$15,000 per additional technician you hire, because sharing tools between trucks does not work in practice.

Shop space follows headcount, not ambition. Solo year one belongs in a home garage if zoning permits — paying $2,000 a month for a warehouse you visit twice a week is the most common early capital mistake. Two to three trucks justify 1,500–3,000 square feet of industrial flex space at roughly $10–$25 per square foot triple-net on a three-to-five-year lease. Four to twelve trucks need 3,500–8,000 square feet with a parts mezzanine and two or three grade-level doors. Never lease retail strip frontage; your customers do not visit you.

Compensation benchmarks. Apprentice or helper: $30,000–$45,000 base plus benefits, typically in a three-to-four-year registered apprenticeship. Senior technician: $50,000–$95,000 base plus spiff. A two-person install crew runs $90,000–$170,000 combined base and drives six to ten installs a week. A customer service rep costs $35,000–$50,000 plus bonus, and a best-in-class one converts 70–85% of inbound calls into scheduled visits — a number worth measuring weekly, because the difference between 50% and 75% booking rate on the same ad spend is roughly a third of your revenue. A dedicated dispatcher at $40,000–$60,000 becomes necessary around four trucks; before that, the owner dispatches, badly, between service calls.

Growth staging, which is where most planning goes wrong. Months 0–12: one truck, home garage, $280,000–$580,000 revenue, owner take-home rather than a real EBITDA line. Months 12–24: two trucks, one full-time CSR, first shop lease, $450,000–$1,000,000 revenue at 8–16% EBITDA. Years 2–4: three to five trucks, a lead tech, a dispatcher, install-versus-service specialization, $1,200,000–$3,500,000 at 12–22% EBITDA. Years 3–7: six to twelve trucks, a general manager, in-house accounting, light-commercial preventive maintenance contracts, $3,500,000–$10,000,000 at 15–28% EBITDA if the shop is run with real discipline — or 6–14% if it is not. That gap between disciplined and loose at identical truck counts is the single most important number on this page.

Exit benchmarks, because you should know the shape of the endgame before you build toward it. A solo owner-operator sale prices at roughly 2.5–4.5x seller's discretionary earnings, typically $400,000–$1,500,000, to a technician going independent or a local competitor. A three-to-eight-truck shop prices at 4–6x EBITDA. Mid-market, eight to twenty-five trucks, prices at 5–8x to an established platform. Private-equity roll-up multiples that peaked around 7–12x EBITDA in the 2018–2023 window have compressed toward 5–9x as exits slowed and rates pressured returns. Premium pricing attaches to specific, buildable attributes: membership penetration above 30%, a 4.6-plus star Google rating with volume, NATE-certified technician mix, a top metro, and light-commercial contracts.

Risks, edge cases, and failure modes

The refrigerant transition is the operational hazard specific to launching now rather than five years ago. The AIM Act of 2020 authorized the EPA to phase down hydrofluorocarbons 85% by 2036. Effective January 1, 2025, new residential and light-commercial air conditioning and heat pump systems must use a refrigerant with global warming potential at or below 700 — in practice R-32 at GWP 675 or R-454B at GWP 466. Daikin, Goodman, and Amana standardized on R-32; Carrier, Trane, Lennox, Rheem, York, and Bosch went to R-454B. Both are A2L mildly flammable, which changes your work: leak detection sensors on indoor units, revised brazing procedure, mandatory leak testing, technician training, and in some cases recovery equipment replacement at $1,000–$2,000 per tech. Existing R-410A systems remain serviceable — R-410A production is capped, not banned — but you now carry three refrigerants instead of one, adding $3,000–$8,000 of inventory carry.

Labor is the failure mode that kills growing shops rather than starting ones. The pattern is predictable: the owner lands enough demand for a second truck, hires the only available warm body, and discovers that a mediocre technician generates callbacks, blown diagnostics, negative reviews, and warranty exposure that costs more than the revenue he produces. One good tech genuinely does outperform two mediocre ones, and the arithmetic is not close once you price in reputation damage. The defense is to treat recruiting as a permanent function rather than an emergency response — maintain relationships with local trade schools, run a real apprenticeship, and be the shop people leave other shops to join.

Consumer financing carries a risk most founders underestimate. Partnering with two or three lenders across credit tiers — the major home-improvement financing programs cover roughly 580 FICO through 750-plus — meaningfully raises close rates on $10,000-plus tickets, at a cost of 3–12% of the ticket. The trap is recourse and buyback provisions. Read what happens when a customer defaults in month four, because on a $18,000 install that clause is the difference between a good year and a bad one. Related: home warranty work from the major national warranty companies brings volume but pays $65–$200 per diagnostic against capped repair amounts. Treat it as a customer acquisition channel with a known cost, never as a profit center, and never let it exceed a modest share of your dispatch board.

Competitive pressure has changed shape. Private-equity-backed platforms — the large multi-brand roll-ups operating across dozens of metros — bid up technician compensation, buy the top Local Service Ads slots, and acquire the established four-to-twenty-five-truck shops in your market. Big-box retailers sell basic system installations through in-store programs. Neither of these is a reason not to start; both are reasons to compete on something they structurally cannot replicate, which is a named local owner whose reputation is personally at stake and whose technicians stay long enough that customers know them by name.

Two more traps worth naming. First, new-construction subcontracting looks attractive because the volume is predictable: builder rough-in at $4,000–$8,000 per home. The margins are 5–12%, payment terms run 60–120 days, and you concentrate your entire receivable in one customer who can decide to change subs. It is a legitimate 5–15% supplement and a catastrophic core. Second, geographic expansion into a second metro fifty-plus miles away is the most common failure point for three-to-five-truck shops. Your brand recognition, review base, referral network, and lead cost all reset to zero, while your management attention splits. Most shops that stall at $2,000,000 stalled because they expanded sideways before they had saturated the market they already owned.

Finally, permit and inspection discipline. Mechanical, electrical, gas, and duct permits are required on installs and major repairs in essentially every jurisdiction, and ACCA Manual J load calculations, Manual D duct design, and Manual S equipment selection are referenced in code in dozens of states. Repeated inspection failures are the fastest route to losing a license, and a license loss is not a setback — it is the end of the company. Build permit pulling into your install workflow as a non-negotiable step rather than something the owner does on Saturday.

A practical rollout plan

Months minus-six to zero, before you take a dollar of revenue: accumulate the documented field experience your state requires and pass the EPA 608 Universal exam while you are still drawing a W-2 paycheck. Most successful founders bootstrap $30,000–$80,000 of equity out of technician wages rather than borrowing it. Sit for your state contractor exam or the NASCLA accredited portable exam if your target state accepts it. Form the LLC, get the EIN, register for state sales tax, and register with your local building department as a permit-pulling contractor.

Months one through three: bind insurance before you buy anything else, because your bond and license filing require it — $1,000,000 general liability (raise to $2,000,000 if you intend to touch light-commercial), workers' compensation, the state-specific bond, commercial auto, and tools-in-transit. Buy the used van. Build the tool kit. Open accounts with two distributors — a national and a member-owned cooperative, because the co-op will treat a one-truck shop better than the national will — and establish dealer relationships with two equipment brands, one premium and one value tier. Do not carry six brands; you will not earn volume pricing on any of them.

Months two through four, overlapping deliberately: stand up the commercial layer before you need it. Claim and fully complete the Google Business Profile, enroll in Local Service Ads and pass the background and license verification, adopt a field service management platform sized to one truck rather than to your ambitions, and buy a flat-rate pricing book. That last item matters more than it sounds. Never quote hourly to a customer — a flat-rate book prices repairs by task, removes any incentive to work slowly, gives the homeowner certainty before you start, and lets you capture the value of being fast rather than being penalized for it. Reprice it quarterly; inflation drift will silently eat four points of margin a year otherwise.

Months four through twelve: run the truck and instrument everything. Track booking rate, first-time-fix rate, average ticket, repair-to-replace conversion, and membership attach rate weekly. Ask for a review on every completed job and automate the request — review volume and recency drive both Map Pack ranking and Local Service Ads placement, and forty-plus recent reviews above 4.6 stars is roughly the threshold for top-three local visibility in most metros. Quote replacements with three options rather than one; good-better-best structures close materially better than take-it-or-leave-it, and always attach financing and a membership bundle to the quote.

Months twelve through twenty-four: the second-truck decision. The trigger is not "I feel busy." It is a sustained backlog of four-plus days on service calls with a membership base that guarantees baseline demand through the shoulder seasons. Hire the apprentice before you need the senior tech if cash is tight, because you can train an apprentice into your standards and you will pay a premium to rent someone else's. Move the CSR to full-time. Sign the smallest shop lease that fits.

Years two through four: build the membership engine deliberately toward 30% of every home you have ever served. This is the single most defensible asset a small shop owns and the one attribute that most reliably raises your exit multiple. It is also, unglamorously, a spreadsheet and a phone call — every completed repair gets a membership offer, every lapsed member gets a renewal call, every install includes the first year bundled. Somewhere in this window you will notice you are spending more time on dispatch, pricing, hiring, and reviews than on refrigerant. That is the job now, and every operating discipline in this rollout — pipeline visibility, conversion tracking, price governance, retention math — is ordinary RevOps practice wearing work boots. Treating it that way, rather than as paperwork you do after dark, is what separates a shop worth 6x from a truck worth 3x.

Related questions

Do I need a state license or is EPA 608 enough?

EPA 608 is federally required to handle refrigerant but does not authorize you to contract. Roughly a dozen-plus states issue a state-level HVAC or mechanical contractor license; the rest license at city or county level. You need both the federal certification and the applicable contractor license.

Should I start solo or hire a technician immediately?

Start solo unless you are already an experienced manager with capital. A solo launch costs $80,000–$200,000 and lets you learn your market's pricing and lead costs on your own dime. Hiring on day one adds $145,000-plus of fully loaded cost against unproven demand.

How long until the business supports a full owner salary?

Most disciplined solo operators reach a livable owner take-home within nine to eighteen months, with year-one revenue of $280,000–$580,000. Reaching a market-rate salary plus real profit typically requires the second truck and a maintenance-agreement base, generally in years two to three.

Is buying an existing HVAC shop better than starting one?

Buying skips licensing lag, brand-building, and customer acquisition, and SBA acquisition financing covers 75–90% of the price at roughly 3.5–6.0x SDE for a single truck. Starting costs less cash and carries no inherited reputation risk. Buy if you can manage; start if you are still learning.

What does the refrigerant change mean for a brand-new shop?

Less than for an established one. You will stock R-32 and R-454B for new installs from day one and carry R-410A only for service, so you avoid the inventory write-down risk that hit shops which overbought R-410A equipment before the 2025 transition.

FAQ

What licenses and certifications do I actually need?

Every technician handling refrigerant needs EPA Section 608 certification — take the Universal level, which covers Type I small appliances, Type II high-pressure systems, and Type III low-pressure chillers. On top of that you need a contractor license: a state-issued HVAC or mechanical contractor license in states that require one, or a municipal license elsewhere. California uses the CSLB C-20 classification, which is among the more demanding in the country. Several states accept the NASCLA accredited examination as a portable credential. Every install and major repair also requires job-level mechanical, electrical, gas, and duct permits with inspections.

How much money do I need to start?

Plan on $80,000–$200,000 for a solo owner-operator. That covers a used service van at $25,000–$45,000, a tool kit at $15,000–$30,000, opening parts inventory at $8,000–$25,000, licensing and bond, first-year insurance, software, an advertising budget, and roughly six months of working capital. A two-to-three-truck shop with a leased warehouse, an apprentice, and a CSR runs $400,000–$1,500,000. SBA 7(a) financing goes up to $5,000,000 at 70–90% loan-to-value, and equipment and vehicle finance typically runs four to seven years at 7–12% effective.

Which refrigerants should a new shop stock in 2027?

Three. R-32 and R-454B for new equipment, because the January 2025 GWP limit of 700 pushed all new residential and light-commercial systems to one of those two depending on manufacturer, and R-410A for servicing the enormous installed base that will remain in service for another twelve to eighteen years. Both R-32 and R-454B are A2L mildly flammable, which means leak detection sensors on indoor units, updated brazing and leak-testing procedure, and technician training you should complete before your first A2L install rather than during it.

What is the fastest way to get the phone ringing?

Google Local Service Ads plus a fully completed Google Business Profile. LSA runs $25–$95 per lead depending on metro and requires background, license, and insurance verification, and it is the dominant channel in most US markets. Dispute bad leads within 48 hours — wrong-service and spam disputes recover the cost. Underneath that, drive review volume relentlessly; roughly forty-plus recent reviews above 4.6 stars is the practical threshold for top-three Map Pack visibility, and the Map Pack is free traffic forever once you earn it.

How important are maintenance agreements, really?

They are the difference between a job and a business. At $189–$329 per system per year with 60–80% gross margin, they represent a modest share of revenue but a disproportionate share of profit, and they smooth the April and October revenue troughs that break undercapitalized shops. More importantly, members call you rather than searching Google when a compressor fails, which converts your most expensive problem — customer acquisition cost — into a solved one. Target 30% penetration of every home you have ever served within three to five years.

When should I hire my first employee?

When you have a sustained four-plus-day backlog on service calls and a membership base large enough to guarantee baseline demand through the shoulder seasons — not when you simply feel busy. If cash is tight, hire an apprentice at $30,000–$45,000 and train them into your standards rather than paying $50,000–$95,000 plus spiff for a senior technician whose habits you will spend a year correcting. Full-time customer service coverage is often the higher-return hire, since booking rate improvements flow straight to revenue with no added truck cost.

Sources

• https://www.epa.gov/section608
• https://www.epa.gov/climate-hfcs-reduction
• https://www.epa.gov/snap
• https://www.bls.gov/ooh/installation-maintenance-and-repair/heating-air-conditioning-and-refrigeration-mechanics-and-installers.htm
• https://www.bls.gov/cew
• https://www.energy.gov/eere/buildings/residential-central-air-conditioners-and-heat-pumps
• https://www.irs.gov/credits-deductions/individuals/energy-efficient-home-improvement-credit
• https://www.acca.org
• https://www.cslb.ca.gov
• https://www.nascla.org
• https://www.sba.gov/funding-programs/loans/7a-loans

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