So you want to start an HVAC business
If you're a tech with a few years under your belt and a truck payment you'd rather be making for yourself, this guide is for you. Starting a heating and air conditioning business is one of the more forgiving trades to go independent in — demand is steady, referrals compound quickly, and you don't need a warehouse to open the doors. But the shops that survive the first year are the ones that treat it like a business from day one, not a side hustle that got out of hand.
Here's the sequence that actually works.
Step 1: Get your license and certifications sorted
HVAC is a licensed trade in most states. The exact rules vary, but nearly every jurisdiction requires:
- EPA Section 608 certification — federally required to buy or handle refrigerant. Universal is worth the extra study time.
- A state HVAC or mechanical contractor license. Most states want documented field experience (2–5 years) plus a written exam.
- A local business license in the city or county where you'll operate.
- NATE certification (optional but worth it) — signals credibility to homeowners comparing bids.
Check your state's contractor licensing board first — the requirements above are the floor, not the ceiling.
Step 2: Pick a business structure and register
For a one-truck operation, an LLC is almost always the right call. It separates your personal assets from the business, costs $50–$300 to file, and takes about a week. Skip the sole-proprietor route unless a CPA specifically tells you otherwise — one refrigerant leak into a customer's home is enough to wipe out your savings if you don't have the LLC firewall.
While you're at it:
- Get an EIN from the IRS (free, five minutes online).
- Open a business checking account — never commingle funds.
- Register with your state for sales tax if you sell parts or equipment.
Step 3: Insurance is not optional
You need three policies before you touch a customer's system:
- General liability ($1M/$2M is standard) — covers property damage.
- Commercial auto — your personal policy will not cover a work truck.
- Workers' comp — required in most states the moment you hire your first employee (sometimes even for yourself).
Add a surety bond if your state or a big commercial customer requires it. Expect $2,000–$4,000/year all-in for a solo shop.
Step 4: Price the work so you actually make money
This is where most new shops quietly bleed out. They price like an employee ("my old shop charged $150/hr, so I'll charge $120") instead of pricing like an owner.
The formula that keeps you solvent:
Loaded labor rate = (Tech wage + Payroll taxes + Benefits + Overhead) ÷ Billable hours × Profit margin
For a one-truck shop, the honest number is usually $140–$180/hour just to break even with a modest profit — before parts markup. If that sounds high, run the math with your actual truck payment, fuel, insurance, phone, software, and unbillable drive time. It adds up faster than you'd think.
Two takeaways:
- Use flat-rate pricing for service calls. Homeowners hate open-ended hourly bills, and flat rate protects you when a job goes long.
- Build a price book on day one. See our HVAC price book guide for the categories and margin math.
Step 5: Buy the tools, not the trophies
You need the tools that let you finish jobs today, not a $15,000 tool wall for Instagram. A working starter kit:
- Recovery machine, gauges, vacuum pump, and scales
- Combustion analyzer (gas furnace work is where the margin lives)
- Refrigerant leak detector and micron gauge
- Basic sheet-metal tools, drill/impact, ladder, and a reliable multimeter
- A service van or truck — used, boring, and reliable beats new and financed
Total starter cost: $8,000–$15,000 if you buy smart. Finance the truck if you must; pay cash for the hand tools.
Step 6: Get your first ten customers
Marketing before you have jobs is mostly waste. What actually generates the first ten calls:
- Tell every tech you've ever worked with you're going out on your own — they'll refer overflow.
- Set up a Google Business Profile with real photos, hours, and service area. Free, and it's how homeowners find you.
- Ask every completed customer for a Google review. Ten reviews put you ahead of half your local competition.
- List on Angi and one paid lead source — see Angi for HVAC contractors for how to make it pay.
- Basic Facebook + Nextdoor presence. Neighborhood referrals are gold in residential HVAC.
The full playbook lives in our HVAC lead generation guide.
Step 7: Set up the back office before it sets you up
The single biggest predictor of whether a new HVAC shop survives year two is whether the owner has a system for:
- Scheduling and dispatch — no more "I think Tuesday?"
- Estimates and invoices — sent same-day, not "when I get to the paperwork"
- Payments — card on the phone, at the job, before you leave
- Recurring maintenance — the base that keeps you fed in shoulder seasons
You can start with a spreadsheet, but the moment you're doing more than 3–4 jobs a day it becomes a liability. Purpose-built HVAC software pays for itself the first month it saves you a missed invoice.
Step 8: The first 90 days
Realistic milestones for a new one-truck HVAC business:
- Days 1–30: Licensing, insurance, LLC, truck outfit, price book, Google profile live. First 3–5 jobs from your network.
- Days 31–60: 15–25 completed jobs. First 10 Google reviews. First recurring maintenance customer signed.
- Days 61–90: Consistent 5+ jobs per week. Book of 3–5 maintenance agreements. Decide whether to hire help or stay solo through the first busy season.
If you hit 60% of those numbers, you're on track. Most shops that fail in year one do so because they never got a real pricing system in place — not because there weren't enough calls.
Where Ratchly fits
Ratchly is built specifically for one-to-five-tech HVAC shops. Scheduling, dispatch, estimates, invoicing, and customer signature capture live in one screen at a flat price a new business can predict. If you're starting from zero, start a free trial — you can have your first customer, first estimate, and first job scheduled inside an hour.