The short answer: your trade ticket qualifies you to do the work, and a contractor license or business authorization is what lets you sell it, so budget for both. Insurance and bonding decide which clients you may even bid. Price a service call, a repair and an install with three different models. And build maintenance agreements early, because they are the only thing that pays you in the shoulder season.
If you are still deciding how to get into the trade at all, this is the wrong guide: how to start an HVAC career covers apprenticeship routes, refrigerant handling certification, and the difference between service and install work. This one assumes you already hold your ticket and a few years on a truck, and are deciding whether to put your own name on the side of it.
The gap between those two is wider than most technicians expect. You already know how to diagnose a failed inducer motor and commission a new furnace. Nothing in that knowledge tells you what to charge for showing up, which license lets you pull a permit in your own name, or how to survive the first March when the phone stops ringing.
Your ticket is not a license to sell the work
This is the first and most expensive surprise. In most jurisdictions there are two separate permissions, and holding one does not grant the other.
The first is personal and you probably have it: the trade certification that says you are qualified to work on the equipment, plus the refrigerant handling certification you need to touch a sealed system, plus the gas authorization if you work on gas-fired appliances.
The second is the business permission: a contractor license, registration or authorization held by the company, in the company name, which is what lets that company contract for work, pull permits and appear on an inspection report. In Ontario a gas contractor works under a TSSA contractor registration; other provinces and most states run the same idea under different names and different bodies. There is usually a fee, an insurance requirement, and a named qualified individual whose certification the registration is attached to.
Get this in the right order. Register the business, then apply for the contractor authorization, then quote work. A permit pulled under someone else's registration is a common shortcut in a first year and it is the kind that ends a business rather than costing it a fine.
While you are there, sort out the ordinary business paperwork too: the legal structure, a business bank account that never mixes with personal money, sales tax registration for GST/HST or your local equivalent once you cross the threshold, and payroll registration before the first employee rather than after.
Insurance and bonding decide which clients you may bid
General liability is the baseline, and in HVAC the exposures are specific enough that it is worth naming them: water damage from a condensate line or a failed coil, a fire from a gas appliance, carbon monoxide, and the sheer cost of a mechanical room in a commercial building. Most residential clients never ask. Every property manager, builder and commercial client asks before you are allowed to quote.
Alongside it: vehicle coverage that actually covers a work van with tools in it, tool coverage that reflects what a recovery machine and a set of gauges are worth to replace, and workers' compensation coverage the day you hire anybody. Some commercial and public work also requires bonding, which is not insurance at all but a guarantee that the job gets finished.
There is a business decision hidden in this. The certificate is what gets you onto a property manager's approved list, and that list is a far better source of steady work than any advertising you can buy in year one. Treat the premium as the cost of access rather than as overhead.
Price three different things three different ways
An HVAC company sells at least three products, and using one pricing model for all three is how new owners end up busy and broke.
The service call. Charge a diagnostic fee for showing up, and say it out loud when the call is booked. Free estimates are for installs, not for repairs. A diagnostic visit is skilled labor, it consumes the most expensive hour of your day, and a company that gives it away attracts people who wanted a free opinion. Waiving it if the repair proceeds is a fair compromise; not charging it at all is not.
The repair. Move to flat-rate pricing as soon as you can. A repair priced by the hour punishes you for knowing exactly which capacitor failed, and it makes every invoice a negotiation about how long you took. Flat rate means you build a price book: the common repairs, each with a price that already includes the part, the labor and your overhead. The client gets a number before you start, which is what they actually want, and your fast technician stops being a liability.
The install. Quote a system, not a piece of equipment. The number has to carry the equipment, the sheet metal or line set changes, the electrical, the permit, the disposal of the old unit, the commissioning, and your margin. Two traps here. The first is quoting against a competitor's number without knowing whether their scope includes the permit and the commissioning. The second is forgetting that equipment margin is not profit until the installation labor has been paid for out of it.
Get your overhead into all three. Divide what the business costs to run in a year, including the van, the insurance, the phone, the software and the hours you spend quoting rather than working, by the hours somebody actually pays for. That number is what a billable hour has to carry before you have earned anything, and it is almost always larger than a new owner's first guess.
Where the first clients actually come from
Not from advertising, in this trade, in the first year.
Property managers and building owners. They have recurring work, they replace equipment on a schedule, and they care more about a technician who answers on a Sunday than about the cheapest quote. Introduce yourself with a certificate of insurance and a rate sheet.
Realtors and home inspectors. Every sale generates furnace inspections, and a failed inspection generates a replacement quote under time pressure. Two good relationships here will fill a first winter.
Your distributor. Counter staff know who is looking for a contractor, and they hear about jobs before anyone else does. Being the person who is easy to deal with at the counter has a return that nobody puts on a marketing plan.
Builders and renovators. Slower to pay and thinner on margin, but they are a volume floor under a service business, and rough-in work is schedulable in the shoulder season when service is quiet.
Your old employer's customers. Handle this carefully. Read whatever you signed, do not take a customer list, and let people find you on their own. A reputation for having poached is a permanent cost in a trade where every supplier and every technician knows each other.
Maintenance agreements are the business, not a side product
HVAC revenue is violently seasonal. The first March and the first October, when nothing is broken and nothing is being installed, are what actually kill new HVAC companies, and no amount of a good August fixes a bad spring.
Maintenance agreements are the answer the trade has already found. A client pays annually or monthly for scheduled service, and in return gets priority booking, a discount on repairs, and a technician who knows the equipment. What you get is worth more: revenue in the quiet months, scheduled work you can place where the calendar is empty, a first look at equipment before it fails, and a client who calls you rather than searching when it does.
Sell them from the first visit, not from a marketing campaign. The moment a technician has just fixed something, in the basement, with the client standing there, is the moment the agreement makes obvious sense. Then keep the promise: a maintenance plan you sell and forget to schedule is worse than not selling one, because it converts a satisfied client into one who has paid for nothing.
Cash flow: you buy the equipment before you get paid for it
The financial shape of an HVAC business is unusual and worth understanding before you sign a lease on a van.
A furnace or a heat pump is bought from the distributor, sometimes on thirty-day terms and sometimes on a card, and installed days later. The client pays on completion, or after an inspection, or in the case of commercial work, in forty-five days with a holdback. Meanwhile the payroll runs weekly. Two large installs in the same week can put a profitable company in genuine difficulty.
Three habits keep it manageable. Take a deposit on any job with equipment in it, sized to cover the equipment rather than as a token. Invoice the day the job is finished, not at the end of the month, because the clock only starts when the invoice exists. And keep the seasonal reality in the plan: put money aside in the two busy seasons deliberately, before it feels like a surplus.
How do you keep a service board and an install schedule in one place?
The operational problem arrives sooner than the technical one. Six service calls, two installs, a permit inspection somebody has to be present for, a maintenance visit that was promised in the spring, and a technician who needs the next address is more moving state than a phone can hold. The first symptom is the one clients remember: a maintenance visit nobody scheduled.
The day board puts today's stops in order, so a technician sees the next address rather than calling to ask. A quote built from your own saved rates goes out from the driveway with the equipment, the permit and the disposal already in it. Photographs of the model and serial plate, the old unit and the finished install attach to the job, which is what makes a warranty claim or a callback a two-minute question instead of an argument. The invoice follows the moment the work is signed off, and you record how the money actually arrived: cash, a cheque, an e-transfer, or a card run on the terminal you already carry. At year end it exports as a CSV, a QuickBooks .IIF file or a PDF pack for the bookkeeper.
It all works in a mechanical room with no signal and syncs when the van is back above ground.
Where Zeus fits
Maintenance agreements and the deposit habit are what carry an HVAC company through March, and both are records: a visit promised in June that has to exist in October, and equipment money that has to be tracked to the job it bought.
Book the return visit while you are still in the basement and it goes on the schedule against that client, so October's week already has work in it rather than depending on you recalling forty conversations. Nothing chases it on your behalf; the client hears from you. The distributor invoice, the sheet metal, the permit and the disposal are recorded against the job that consumed them, so the install's margin is a figure rather than a feeling, and the deposit you took sits against the same job. Photos of the model and serial plate file to the address once you confirm them, which is what makes a warranty question two years out a lookup. Laying all of it across a week is the day board.
The feature list covers the rest. It costs nothing to start, there is no card, and it does not expire; each size is set out here. Put it on the phone before the first shoulder season.
Your ticket got you into the basement. What decides whether the name on the van is still there in three years is duller than the trade: the agreement you booked before you left, and the number you can put on the install you finished last week.
Frequently asked questions
How much does it cost to start an HVAC business?
More than most trades, because the tools are expensive and the van is not optional. A realistic solo start, covering gauges, a recovery machine, a vacuum pump, torches, a decent meter, the contractor registration, a year of liability insurance and a used van, lands as a rough planning figure between $25,000 and $60,000. The wide range is the vehicle and whether you already own your hand tools. On top of that you need working capital, because you will be buying equipment before clients pay for it.
Do I need a license, or is my trade ticket enough?
Both, and they are separate. Your ticket and refrigerant handling certification qualify you personally to do the work. A contractor license, registration or authorization held by the business is what lets the business contract for work and pull permits. Names and issuing bodies differ by province and state, so confirm with the authority that governs gas and mechanical work where you operate before you quote a single job.
Should I start with service or with installations?
Service, if you can. It needs less capital, it pays in days rather than at the end of a long job, and it generates the install quotes on its own, because the technician who has been in the basement is the one the client asks for a replacement number. Install-only companies exist and can be very profitable, but they need capital, a crew and a lead source from day one.
How do I get through the first shoulder season?
Plan for it in the busy season rather than reacting to it in the quiet one. Sell maintenance agreements and place the visits deliberately in the slow months. Take rough-in work from a builder for the same reason. Set aside cash in the two peaks with the specific intention of spending it in the two troughs. And use the quiet weeks for the work that never gets done otherwise: building your flat-rate price book, chasing the property managers you never called, and getting your paperwork straight.
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