How to Start an HVAC Business Step by Step

Starting an HVAC business is a sequence, not a checklist. Some steps unlock others, so doing them out of order costs you weeks. This 10-step plan takes you from “I’m thinking about going solo” to first booked call in 60-120 days, depending on your state’s licensing backlog.

Steps 1-4: Get Legal and Tooled

The first month is paperwork and procurement. Skip none of it.

1. Get your state HVAC contractor license. Most states require 2-4 years documented field experience plus a trade exam and business law exam. Apply through your state contractor board (CSLB in CA, TDLR in TX, DBPR in FL). Budget 30-90 days for processing.
2. Pass EPA Section 608 Universal. $25-$150 through Mainstream Engineering or ESCO Institute. Online proctored. You cannot legally buy or handle refrigerant without it.
3. Form your LLC + get EIN + open business banking. LLC at your secretary of state ($50-$500), EIN free at IRS.gov, business checking at a local credit union.
4. Lock in insurance + bond. General liability $1M/$2M ($80-$200/mo), commercial auto ($120-$280/mo), surety bond as required by your state. Workers comp if hiring.

The order inside this phase matters more than the speed. File the license application in week one, because its 30-90 day processing time gates everything and nothing you do speeds it up. Take EPA 608 the same week; it is online, cheap, and done in days. The LLC, banking, and insurance all fit inside the license wait, which is also when you hunt for the van. Treat the wait as your build window, not dead time.

For the deeper breakdown of registration, see how do I set up and register.

Steps 5-7: Van, Tools, and Supply Chain

Now you spend money. Stay disciplined. Tool snobbery is real and it’ll eat $5k of margin if you let it.

5. Buy your van. Used Transit 250 medium roof ($10k-$14k) or Sprinter 2500 ($15k-$25k used). Get it shelved (Adrian Steel, Ranger Design, $1,800-$3,500) and either wrapped ($2,500-$4,500) or door-lettered ($400-$800). Phone number must be legible from 50 feet.
6. Stock the van. Digital manifold (Fieldpiece SMAN460 $600), recovery (Appion G5Twin $1,100), vacuum pump (JB DV-200N $350), micron gauge ($200), leak detector ($350), brazing kit + N2 ($700), hand tools, drill, recip saw, ladders. Truck stock: capacitors, contactors, motors, thermostats, condensate pumps, refrigerant. Full list in buying equipment.
7. Open supplier accounts. Ferguson HVAC and Johnstone Supply. Both require LLC docs, COI, resale certificate. Net-30 terms unlock after 2-3 months of orders.

Open the Ferguson and Johnstone accounts in week one even though you will not order for a month, because the thing you actually want from them, net-30 terms, only unlocks after 2-3 months of order history. Net-30 is not a convenience, it is your materials float: on a $9,000 replacement you front the equipment and collect on completion, and with terms the supplier carries that gap instead of your bank account.

The van is the biggest discretionary number in the whole launch, and there is a legitimate cheap path most guides skip:

If your truck can carry a ladder, a recovery machine, and basic stock, starting lean and buying the van out of month 3-4 cash flow is a defensible move that keeps you near the budget floor. If you plan to run replacements from day one, buy the van now; install revenue pays it off fastest.

By end of week 6 you have a moving billboard with everything needed to close a same-day repair.

The Launch Budget on One Page

Every line below comes from the steps above; here is the whole launch in one view.

Set the Price Book Before the Phone Rings

A new operator quoting from gut feel underprices every time, because the reference point is the hourly wage he just left behind. Build a flat-rate price book before the first call: a fixed price per task (capacitor swap, blower motor, condensate pump) with a $129-$159 diagnostic fee that gets credited toward the repair when the customer approves the work. The credit is the close. Nobody feels double-charged, so approval rates run higher than hourly billing ever manages, and your average ticket stops depending on how fast you work.

Quote replacements as good/better/best, three written options on one page. The homeowner who would have stalled on a single $11,400 number picks the middle option when it sits between $8,900 and $14,200, because the decision changes from “spend or don’t” to “which one”. Most buyers take the middle, which is exactly where your margin should live. Tier construction is in setting prices and billing.

Steps 8-10: Get the Phone Ringing

This is where most new operators fail. They have a perfect van and zero customers because they assumed phone would just ring.

8. Set up Google Business Profile. Verify (postcard or video), set service area 15-25 miles, post your hours, upload 20+ photos of van/techs/installs. GBP is the single biggest lead source in HVAC.
9. Build the website. Five pages: home, services, service area, maintenance plans, contact. Click-to-call header. Schedule-online widget. Embed GBP reviews. DIY on a contractor platform, hire a freelancer, or use a done-for-you service like /get-website/. Detail in how to make a website.
10. Launch Google Local Services Ads + GBP optimization. LSAs ($25-$45 per qualified call lead, pay-per-lead not click) are the highest-ROI HVAC channel. Pair with at least 25 Google reviews in your first 90 days. See how to run Google Ads.

Reviews are the multiplier on everything in this phase. LSA rank weights review count and rating, so the same $1,000 of budget buys more leads at 25 reviews than at 5, and the leads it buys close better because callers checked your profile first. That makes the review ask a launch task, not a someday task: every one of your first 30 customers gets asked at the door, and the link gets texted from the driveway before you pull away.

Day 60-90: you should be taking 15-30 service calls a month and starting to convert them into maintenance plan customers.

What to Do Differently as a Solo Tech

You’re going to want to do everything. Don’t. The 80/20 of solo HVAC is:

• Answer every call live during business hours. Voicemail loses 60% of HVAC leads.
• Sell a maintenance plan on every visit. $20/mo recurring is the moat.
• Ask for a Google review before you leave. “Hey, would you mind giving me a quick review on Google? It really helps the small business.”
• Track your jobs in Housecall Pro or Jobber from day one. Don’t run on spreadsheets.