How to start an HVAC business
A plain checklist: EPA certification, state licensing, insurance, tools, pricing your first calls and finding your first customers — without the income promises.
Who it suits
HVAC suits technicians who already have field experience and want to own the customer. Work arrives in waves with the weather, and the steady part of the year is built on tune-ups and the customers who call you back when something breaks.
1.Get certified before anything else
Anyone who works on refrigerant circuits needs EPA Section 608 certification, and the certificate has to be kept on file. This is federal, not state-by-state.
Many states also license HVAC contractors or technicians. Check your state licensing board for what you need to pull permits under your own name.
2.Decide what you will service
Residential service and replacement, light commercial, ductwork, or a niche such as mini-splits or heat pumps. Each one changes the tools, the inventory and the buyer.
Most new owners start with residential repair and tune-ups, and add replacements once they have supplier accounts.
3.Register the business
Choose a structure — sole proprietor or LLC are the usual starting points — register the name, get an EIN, and open a separate business bank account.
Check your city and county for a general business licence on top of the trade licence.
4.Insurance
General liability covers damage at a customer’s home. Commercial auto covers the van. Many states require a contractor bond as part of the licence.
If you hire, workers’ compensation is required in most states.
5.Tools, van and suppliers
Gauges or a digital manifold, a recovery machine and cylinders, a vacuum pump, a leak detector and the hand tools you already use. Buy for the calls you will take first, not the whole catalogue.
Open accounts with a local supply house early. Trade pricing and same-day parts decide how many calls you can finish on the first visit.
6.Price your calls
Most HVAC businesses charge a diagnostic or service-call fee, then quote the repair flat-rate from a price book. Replacements are quoted per system, with options.
Track your hours and parts on every job for the first months. A flat rate that does not cover the real time is how a busy summer still loses money.
7.Find your first customers
Claim a free Fixerlane listing so homeowners searching for HVAC service nearby can find and message you.
Offer every repair customer a tune-up in the next season. Ask for a review once the job is done — reviews are what the next homeowner reads.
8.Plan for the peaks
The first heat wave and the first cold snap bring more calls than one tech can answer. Decide in advance which calls come first, what after-hours work costs, and who you can call in to help.
The trade in numbers
440,900 people work as heating, air conditioning and refrigeration mechanics and installers in the US.
Source: U.S. Bureau of Labor Statistics, Occupational Outlook Handbook, 2025
Employment of HVAC mechanics and installers is projected to grow 11% over the decade, which BLS describes as much faster than average.
Source: U.S. Bureau of Labor Statistics, Occupational Outlook Handbook, 2025–35 projections
111,207 plumbing, heating and air-conditioning contractor businesses with employees (NAICS 238220, which counts HVAC and plumbing together); 64,871 of them have fewer than five employees.
Source: U.S. Census Bureau, County Business Patterns, 2023
Technicians must keep their EPA Section 608 certificate until three years after they stop working as a technician.
Source: U.S. Environmental Protection Agency, Section 608 technician fact sheet, Current rule
Your first customers, free
List your HVAC business on Fixerlane at no cost. Homeowners searching for hvac in your area can find you and send enquiries, and replying is free. When the work picks up, the tools to quote, schedule and invoice are a 7-day free trial away.
Common questions
- Do I need a licence to start an HVAC business?
- You need EPA Section 608 certification to work on refrigerant, everywhere in the US. Many states also license HVAC contractors; the rules differ by state, so check your state licensing board before your first paid job.
- How much does it cost to start an HVAC business?
- We do not publish a figure. Tools, a van, insurance and licensing vary widely by state and by what you already own. Price each one locally before you commit.
- How do I get my first HVAC customers?
- A free listing where homeowners already search, the contractors and property managers you already know, and a review from every early customer. A tune-up customer this spring is a repair call next summer.
- Should I sell maintenance plans?
- Many HVAC businesses do, because tune-ups fill the slow months. Start by scheduling seasonal visits for the customers who ask, and decide on a formal plan once you know what a visit really takes.
- How much do HVAC technicians earn?
- We do not promise earnings. The Bureau of Labor Statistics publishes real pay figures for HVAC mechanics and installers in the Occupational Outlook Handbook.