How to Start an HVAC Business: Step-by-Step Guide

The HVAC industry in the United States is worth over $30 billion and growing. Climate change is driving increased demand for both cooling and heating systems, building codes are getting stricter around energy efficiency, and the push toward heat pumps and electrification is creating entirely new service categories. Meanwhile, the industry faces a well-documented technician shortage -- an estimated 115,000 HVAC technician positions will need to be filled by 2030. For experienced HVAC technicians, this means one thing: there has never been a better time to start your own HVAC business. Demand is high, supply is constrained, and customers are willing to pay premium rates for competent, reliable service. This guide walks through every step, from EPA certification to your first marketing campaign, based on what we see working across hundreds of service businesses on the Deelo platform.

HVAC is a regulated trade with several layers of certification and licensing. Getting these right before you launch is non-negotiable -- operating without proper credentials exposes you to fines, lawsuits, and criminal charges in some jurisdictions.

EPA Section 608 Certification: Required by federal law to purchase, handle, or dispose of refrigerants. There are four types: Type I (small appliances), Type II (high-pressure systems like residential AC), Type III (low-pressure systems like chillers), and Universal (all types). Get the Universal certification -- it costs $30-50 for the exam and covers everything. You cannot legally work on any system containing refrigerant without this.

State HVAC Contractor License: Requirements vary dramatically by state. Some states (like California, Texas, and Florida) require a separate HVAC contractor license with experience requirements (typically 4-5 years), a trade exam, and a business law exam. Other states (like Colorado and Pennsylvania) regulate at the local level. Check your state contractor licensing board for exact requirements.

Business License and Registration: Register your LLC (recommended structure for liability protection and tax flexibility), obtain an EIN from the IRS, and register with your state's Secretary of State. Some municipalities require a separate local business license.

NATE Certification (optional but valuable): North American Technician Excellence certification is not legally required but signals competence to customers and can justify higher rates. NATE-certified technicians earn 10-15% more on average.

EPA 609 Certification: Required if you plan to service motor vehicle air conditioning systems. This is separate from Section 608 and specifically covers automotive HVAC.

Budget $1,000-3,000 for all licensing and certification fees, depending on your state.

HVAC work carries higher liability risk than many other trades because of electrical components, gas connections, and refrigerant handling. Proper insurance is not optional.

General Liability Insurance: Covers property damage and bodily injury. An HVAC system that leaks refrigerant into a home, a condensate line that floods a ceiling, an installation that causes a fire -- general liability covers these claims. Most states require $1,000,000 in coverage. Budget $1,500-4,000/year for a small HVAC business.

Commercial Auto Insurance: Your work vehicle is a commercial vehicle. HVAC vans are typically heavier (carrying refrigerant tanks, tools, and parts) than standard vehicles, which affects premiums. Budget $1,500-3,500/year per vehicle.

Workers' Compensation: Required in most states once you hire employees. HVAC work is classified as moderate-to-high risk due to electrical exposure, heights (rooftop units), and chemical handling (refrigerants). Premiums typically run $4,000-8,000/year per employee -- significantly higher than less hazardous trades.

Professional Liability (Errors and Omissions): Covers claims of faulty design or installation. If you size a system incorrectly and the customer's utility bills are $200/month higher than promised, E&O insurance covers the resulting claim. Budget $800-2,000/year.

Pollution Liability: Specific to HVAC -- covers refrigerant spills, chemical releases, and environmental contamination. Not all general liability policies cover pollution events. Budget $500-1,500/year.

Surety Bond: Required in many states. Typically $5,000-25,000 face value. The annual premium is 1-15% of the bond value based on your credit score. A $15,000 bond might cost $150-2,250/year.

Total first-year insurance budget for a solo HVAC business: $5,000-12,000. Add $4,000-8,000 per employee for workers' comp.

HVAC startup costs are higher than most service trades because of the specialized equipment required. Here is a practical breakdown.

Essential tools and equipment (budget $8,000-15,000): - Refrigerant recovery machine and scale - Vacuum pump and manifold gauge set - Refrigerant leak detector (electronic) - Combustion analyzer (for gas furnace diagnostics) - Multimeter and amp clamp - Manometer and pressure testing equipment - Flaring and swaging tools - Sheet metal tools (snips, bender, crimper) - Drill, impact driver, and reciprocating saw - Brazing torch and nitrogen regulator - Psychrometer/hygrometer - Inspection camera - Level, tape measure, and basic hand tools

Buy later as revenue allows: - Mini split installation kit ($500-1,000) - Duct blaster / blower door for energy audits ($2,000-4,000) - Thermal imaging camera ($300-2,000) - Sheet metal brake for fabrication ($1,500-3,000) - Refrigerant recovery/recycling system ($1,000-2,500)

Vehicle: A larger cargo van or enclosed trailer is standard for HVAC. You need space for refrigerant tanks, copper tubing, sheet metal, and bulkier equipment than most trades. A used Ford Transit 250/350 High Roof or Ram ProMaster 2500/3500 is ideal. Budget $20,000-35,000 for a reliable used van. Add shelving and organization ($1,000-2,500).

Initial refrigerant inventory: You will need a stock of common refrigerants (R-410A, R-22 for legacy systems, R-32 for newer heat pumps). Budget $500-1,500 for initial inventory. Refrigerant costs have been volatile -- R-22 in particular has skyrocketed due to the phase-out.

Total startup equipment budget: $30,000-55,000 for tools, vehicle, and initial inventory.

HVAC pricing is more complex than many trades because of the range of services (maintenance, repair, installation) and the cost of materials (a residential AC unit alone costs $1,500-5,000 wholesale). Here is how to set pricing that keeps your business profitable.

Service calls and diagnostics: Charge a flat diagnostic fee ($79-150) that covers your travel time and the first 30-60 minutes of troubleshooting. This fee should be waived or credited toward the repair if the customer approves the work. Do not offer free diagnostics -- it attracts price shoppers and undervalues your expertise.

Maintenance agreements: This is the lifeblood of a profitable HVAC business. Offer annual maintenance plans at $150-300/year per system that include two seasonal tune-ups (one heating, one cooling), priority scheduling, and a discount on repairs (typically 10-15%). Maintenance agreements create recurring revenue, deepen customer relationships, and give you first look at equipment that needs replacement. A mature HVAC business generates 15-25% of its revenue from maintenance agreements.

Repair pricing: Use flat-rate pricing whenever possible. Common repairs and their typical price ranges: capacitor replacement ($175-350), contactor replacement ($200-400), blower motor replacement ($400-800), compressor replacement ($1,500-3,000), refrigerant leak repair and recharge ($300-900). Price includes parts, labor, and your margin.

Installation pricing: This is where the real money is. A residential AC replacement runs $4,000-8,000, a furnace replacement $3,000-7,000, a full system replacement $8,000-15,000, and a ductless mini-split installation $3,000-8,000. Your margin on installations should be 30-50% after equipment and labor costs. Offer financing options -- customers who cannot pay $8,000 upfront can afford $150/month, and financing dramatically increases your close rate on installation proposals.

Good-better-best proposals: Always present three options. Good (basic replacement, same capacity), Better (upgraded efficiency, extended warranty), Best (premium equipment, smart thermostat, air quality add-ons). The "Better" option should be your target -- it offers the best margin while providing genuine value. Most customers choose the middle option when presented this way.

The operational systems you put in place during your first month will determine whether your HVAC business runs smoothly or becomes a source of constant stress. Here is what you need from day one.

Scheduling and dispatch: HVAC is time-sensitive -- a broken AC in August or a dead furnace in January is an emergency. You need a scheduling system that lets you manage routine maintenance, scheduled repairs, and emergency calls without double-booking. As you add technicians, dispatch becomes critical -- routing the right tech to the right job based on skills, location, and parts availability.

Customer management (CRM): Track every customer, every system they own, installation dates, warranty status, maintenance history, and service agreements. When a customer calls about their AC not cooling, your tech should know before arriving that it is a 2019 Carrier Infinity system that had a capacitor replaced last year and is on a maintenance agreement. This context saves diagnostic time and builds trust.

Invoicing and payments: Send professional invoices immediately after job completion. Accept credit cards and ACH on-site. For installations, offer financing through a third-party provider (GreenSky, Synchrony, or Wisetack). Financing options on proposals increase close rates by 20-30%.

Proposals and estimates: Digital proposals with good-better-best options, photos, and financing calculations. Email them to the customer for electronic signature. Track which proposals are pending, approved, or declined so you can follow up.

All of these functions can be handled by separate tools (Google Calendar, QuickBooks, a spreadsheet CRM, a proposal tool), but managing 4-5 separate subscriptions with manual data transfer between them is a scalability dead end. An all-in-one platform like Deelo handles scheduling, CRM, invoicing, proposals, marketing, and more in one system where data flows automatically. A completed maintenance visit triggers an invoice, updates the equipment service history, and schedules the next visit -- without manual entry.

HVAC marketing has a unique advantage over many industries: demand is seasonal and predictable. Everyone needs AC service in spring/summer and heating service in fall/winter. Time your marketing around these cycles.

Google Business Profile (free, start here): When a homeowner's AC dies in July, they Google "HVAC repair near me." Your Google Business Profile determines whether you show up in those results. Complete every field, add photos of your work and team, list all services, set your service area, and actively collect Google reviews. A plumber or HVAC company with 30+ reviews and a 4.5+ star rating will dominate local search results over a competitor with better skills but no reviews.

Google Local Services Ads ($200-800/month): Pay-per-lead advertising that puts you at the top of search results with a "Google Guaranteed" badge. HVAC leads typically cost $25-60 each. During peak season (June-August for cooling, November-January for heating), increase your budget. During shoulder months, reduce it. Track your cost per lead and cost per closed job to optimize spending.

Seasonal marketing campaigns: Two months before each season, email and text your existing customer base to schedule maintenance. A well-timed "Schedule your spring AC tune-up before the rush" campaign can book 2-4 weeks of maintenance appointments. This creates predictable revenue during transition seasons and gives you first look at systems that need replacement.

Vehicle wrap ($2,000-4,000): HVAC vans are large and visible. A professional wrap generates tens of thousands of daily impressions. Include your company name, phone number, website, "Licensed and Insured" badge, and a memorable tagline.

Home warranty and real estate partnerships: Connect with local home warranty companies and real estate agents. When a home warranty claim involves HVAC, the warranty company dispatches a local contractor. Real estate agents recommend HVAC companies for pre-sale inspections and system certifications. These relationships generate a steady stream of referrals.

Maintenance agreement marketing: Your most profitable marketing is selling maintenance agreements to existing customers. Every repair call and installation is an opportunity to offer a maintenance agreement. Customers on maintenance agreements have a 3-5x higher lifetime value than one-time service customers.

The HVAC technician shortage is real, and it affects your hiring timeline and budget. Here is how to approach your first hire.

When to hire: When you are consistently turning away emergency calls or booking maintenance appointments 3+ weeks out. For most HVAC businesses, this happens within 12-18 months of launching, often faster in hot-climate markets.

Who to hire: Consider an EPA-certified apprentice or junior technician rather than a fully experienced tech. Experienced HVAC technicians command $25-40/hour and often prefer the stability of a larger company. An apprentice at $18-25/hour can handle maintenance visits, basic diagnostics, and straightforward repairs while you focus on installations, complex troubleshooting, and sales. Over 2-3 years, they develop into a fully capable technician who knows your systems and your customers.

The financial case: An apprentice earning $22/hour loaded costs roughly $45,000/year. If they handle 4-5 service calls per day at an average ticket of $200, they generate $200,000-250,000 in annual revenue. Even accounting for materials, vehicle costs, and overhead, each productive technician adds $80,000-120,000 in annual gross profit to your business.

Retention matters: In a tight labor market, losing a technician costs $5,000-15,000 in recruiting, training, and lost productivity. Invest in retention: competitive pay, performance bonuses, tool allowances, paid training, and a reasonable on-call rotation. The cost of keeping a good tech is always less than the cost of replacing one.

Startup costs: - Licensing and certification: $1,000-3,000 - Insurance (first year): $5,000-12,000 - Vehicle (used van): $20,000-35,000 - Tools and equipment: $8,000-15,000 - Refrigerant inventory: $500-1,500 - Marketing (first 3 months): $2,500-6,000 - Software and technology: $300-1,000 - Working capital: $5,000-15,000 - Total: $42,300-88,500

Revenue potential (solo, Year 1): $120,000-250,000. HVAC businesses typically generate higher per-job revenue than other service trades due to equipment costs and system complexity. Average on the Deelo platform for first-year HVAC businesses is approximately $150,000.

Net income (solo, Year 1): $55,000-110,000 after expenses. Higher than plumbing and electrical because of the higher average ticket value on installations and the recurring revenue from maintenance agreements.

Year 2 with one employee: Revenue of $250,000-450,000, net income of $90,000-180,000. The key to Year 2 growth is building a base of maintenance agreements (target 100+ agreements by end of Year 1) that create predictable recurring revenue and installation pipeline.