Last updated: April 30, 2026

How to Start an HVAC Business in Texas (2026)

Texas’s HVAC contractor licensing is centralized at the Texas Department of Licensing and Regulation (TDLR) under Texas Occupations Code Chapter 1302, which means you deal with one state agency for both residential and commercial HVAC work – no separate state plumbing-board overlay, no county-level technician certifications, and no de minimis exemption that lets unlicensed people do small jobs. Every person who installs, services, or maintains HVAC or refrigeration equipment in Texas must hold either a TDLR ACR Contractor License (Class A unlimited or Class B up to 25 tons cooling and 1.5 million BTU/hour heating) or work under the supervision of a licensed contractor with an ACR Technician Registration. Compared to no-state-license states like North Carolina (NCSBPHFSC) or Pennsylvania (HICPA registration only), Texas’s TDLR system is more uniform and has clearer enforcement.

The other thing every Texas HVAC operator needs to plan for is backup heat demand driven by Winter Storm Uri (February 2021) and the resulting Senate Bill 3 grid weatherization law of the 87th Legislature. SB 3 weatherizes power generators and gas suppliers – it doesn’t change residential HVAC code directly – but the grid failure during Uri created persistent consumer demand for systems with non-grid-dependent backup heat. Texas customers now routinely ask for dual-fuel heat pumps with propane or natural-gas backup, oversized auxiliary electric strips, or whole-home generators paired with the HVAC system. Operators who can credibly sell and install backup-heat configurations have a margin advantage over commodity heat pump installers. This guide compiles the specific TDLR ACR licensing, EPA 608 federal certification, A2L refrigerant transition (R-32 / R-454B effective January 1, 2025), insurance requirements, and city-overlay rules that apply to starting an HVAC business in Texas in 2026.

HVAC Requirements in Texas at a Glance

Requirement	Agency	Cost	Timeline
TDLR ACR Contractor License (Class A or Class B)	Texas TDLR Air Conditioning and Refrigeration	$115 application + ~$115 license; 1-year validity	4-12 weeks (after experience verified)
4,000 hours / 48 months practical experience	Verified by TDLR	Time investment	Required before exam (12 months experience + technician certification can substitute partially)
TDLR ACR Contractor Examination	Texas TDLR / PSI Services	~$80 exam fee	Schedule after experience verification; pass before licensing
ACR Technician Registration (each tech under license holder)	Texas TDLR	$50 application + $50 registration	Required for any non-licensed tech doing HVAC work
General Liability Insurance	Commercial insurer	Class A: $300K/$600K/$300K; Class B: $100K/$200K/$100K minimums	Required to maintain TDLR license
EPA 608 Federal Certification (refrigerant handling)	EPA-approved testing organization	$25-$80 lifetime certification	Required before handling refrigerant; lifetime valid
Texas LLC Certificate of Formation	Texas Secretary of State	$300 (Form 205)	2-3 business days online
Sales and Use Tax Permit	Texas Comptroller	Free	2-3 weeks
Workers’ Compensation (optional in TX)	Texas Mutual or private carrier	NCCI 5537 typical 5-9% of payroll if subscribing	Optional; non-subscribers file DWC-005
Local building permits / mechanical permits	City building department	Varies by job size	Per project

How to Start an HVAC Business in Texas (Step by Step)

Step 1: Choose Your ACR Contractor License Class

Texas TDLR issues two ACR contractor license classes under Texas Occupations Code Chapter 1302 and 16 TAC Chapter 75:

Class	Scope	Typical Use Case
Class A	Any size cooling or heating system	Commercial chillers, large rooftops, industrial refrigeration, hospitals, distribution centers
Class B	Cooling systems up to 25 tons; heating systems up to 1.5 million BTU/hour	Virtually all residential and light commercial work (single-family homes, small offices, retail)

Endorsements (each license carries one):

• Environmental Air Conditioning: standard residential and commercial comfort cooling/heating systems
• Commercial Refrigeration: walk-in coolers, freezers, supermarket refrigeration, transport refrigeration
• Process Cooling and Heating: industrial process applications, server room precision cooling, manufacturing

A Class A holder with Class A insurance ($300K/$600K/$300K) can also do Class B work without a separate Class B license. Most residential operators choose Class B + Environmental Air Conditioning. Most commercial operators choose Class A + the endorsement matching their work mix.

Step 2: Accumulate 4,000 Hours / 48 Months Supervised Experience

Texas requires 48 months of practical experience under licensed supervision within the past 72 months for both Class A and Class B. Alternative path: 12 months as a TDLR-registered Certified Technician plus 36 months experience within 48 months. Document your hours with a TDLR Experience Verification form signed by your supervising licensed contractor. The 4,000-hour bar is in line with North Carolina’s NCSBPHFSC standard and stricter than Pennsylvania (no state license at all – just HICPA registration if you do residential work over $5,000/year).

Step 3: Pass the TDLR ACR Contractor Examination

After TDLR verifies your experience, schedule your contractor exam through PSI Services. The exam covers:

• Texas Occupations Code Chapter 1302 and 16 TAC Chapter 75
• Refrigeration thermodynamics and cycles
• Electrical safety and NEC
• Manual J load calculations and equipment sizing
• Texas mechanical code (varies by city – typically International Mechanical Code 2018 or 2021)
• Refrigerant handling and EPA 608 baseline

Cost: roughly $80 per exam sitting. Multiple endorsements require separate sittings. Pass rate hovers around 60-70% on first attempt. Study the TDLR ACR Candidate Information Bulletin and a contractor exam prep course before sitting.

Step 4: Get EPA 608 Federal Certification

Federal Clean Air Act Section 608 requires technicians who maintain, service, repair, or dispose of stationary refrigerant-handling equipment to hold the appropriate certification level:

• Type I: small appliances (under 5 lb refrigerant – window units, mini-fridges)
• Type II: high-pressure equipment (most residential and commercial AC, heat pumps)
• Type III: low-pressure equipment (chillers, large industrial)
• Universal: covers all three

Cost: $25-$80 one-time, lifetime certification. Take the test through any EPA-approved testing organization (ESCO, Mainstream Engineering, online options). EPA 608 violations carry penalties up to $59,114 per violation per day as adjusted for 2026 inflation. EPA 608 is held by individual technicians, not the contracting company – every tech who handles refrigerant needs personal certification.

Step 5: Form Your Texas LLC and Obtain Insurance

File Certificate of Formation Form 205 with the Texas Secretary of State for $300. Get general liability insurance at the TDLR-required levels – failure to maintain triggers automatic license suspension:

License Class	Per Occurrence	Aggregate	Products / Completed Operations
Class A	$300,000	$600,000	$300,000
Class B	$100,000	$200,000	$100,000

A Class A policy satisfies Class B requirements if you hold both. Submit certificate of insurance directly to TDLR. Annual premium typically runs $1,500-$3,500 for a small Class B operation; $3,000-$6,500 for Class A. Most operators add additional coverage above the TDLR minimum – $1M/$2M general liability is industry standard.

Step 6: Register Your Technicians with TDLR

Every non-licensed tech doing HVAC work in Texas must hold a TDLR ACR Technician Registration. Two paths:

• ACR Technician Registration: $50 application + $50 registration. Tech works under the supervision of your licensed contractor. Most common starting path.
• ACR Certified Technician: $50 application. Higher tier – certified techs can substitute toward contractor exam eligibility (12 months as Certified Technician = 12 months experience credit).

The contractor (you) is responsible for ensuring all techs are properly registered. TDLR audits and field inspections check tech credentials – finding an unregistered tech on your job site is a contractor enforcement action against the license holder, not the tech.

Step 7: Decide on Workers’ Compensation (Optional in Texas)

Texas is the only state where workers’ comp is optional for private employers. For HVAC, the math is rarely favorable for non-subscriber status:

• NCCI class code 5537 (HVAC contractors): typical premium runs 5-9% of payroll for subscribers – one of the higher class codes due to falls from ladders/roofs, electrical exposure, refrigerant handling, lifting injuries, and vehicle exposure.
• Non-subscriber tort exposure: An HVAC tech who falls off a roof or suffers a refrigerant burn can sue without contributory negligence, assumption of risk, or fellow servant defenses available to a non-subscriber. The settlement floor for a serious construction-trade injury easily exceeds 5-10 years of premium savings.

Most HVAC operators subscribe through Texas Mutual or a private carrier. Non-subscribers must file Form DWC-005 with the Division of Workers’ Compensation reporting their status. If you go non-subscriber, talk to a Texas-experienced employment lawyer about a non-subscriber occupational injury benefit plan – it provides some private-tier injury benefits in exchange for an arbitration agreement, partially mitigating the tort exposure.

Step 8: Plan for A2L Refrigerant Transition and Texas Backup-Heat Demand

A2L refrigerant transition (effective January 1, 2025)

Manufacturers transitioned residential and light commercial systems from R-410A (now phased out for new equipment) to mildly flammable A2L refrigerants:

• R-32: Daikin’s preferred A2L. Single-component, simpler charging.
• R-454B: Carrier, Trane, Lennox, Rheem. Zeotropic blend – requires liquid-state charging (different from vapor-state R-410A charging). Mistakes change the composition.

Practical contractor implications: new manifold gauges and recovery equipment certified for A2L flammability, new evacuation procedures, OEM-specific A2L training, and customer education on why their replacement system uses different refrigerant. Some Texas customers (especially in Hill Country and rural areas) pushed back hard on A2L for 2026 installations – operators who can clearly explain the transition close more sales.

Texas backup-heat demand (post-Winter Storm Uri 2021)

Senate Bill 3 of the 87th Legislature (2021) imposed grid weatherization on power generators and gas suppliers in response to Winter Storm Uri’s February 2021 grid failure. SB 3 doesn’t change residential HVAC code directly, but Uri’s grid failure created persistent customer demand for systems with non-grid-dependent backup heat:

• Dual-fuel heat pumps with propane or natural-gas backup furnaces – heat pump for 95% of the year, gas furnace below ~40°F or during outage with generator
• Oversized auxiliary electric heat strips – resistance heat as backup when heat pump can’t keep up in extreme cold
• Whole-home generators paired with HVAC sizing – propane or natural-gas standby generators sized for HVAC plus essential loads
• Cold-climate heat pumps rated for performance below 5°F – higher-end units that perform better in Texas’s occasional Arctic outbreaks

Operators who can credibly sell and install backup-heat configurations earn premium margins over commodity heat pump installers. The Texas residential HVAC market shifted meaningfully after Uri – this isn’t going away, and operators who continue to install minimum-spec single-stage heat pumps without backup are losing share to operators who lead with reliability narratives.

Texas HVAC Sales Tax and City Overlay

Sales tax on HVAC work in Texas: The taxability of HVAC work depends on whether it’s classified as a real property improvement (non-taxable labor) or as taxable repair/maintenance. Generally:

• New installation: Real property improvement – labor is non-taxable; materials sold to the contractor at retail are taxable.
• Repair, maintenance, and remodeling of nonresidential property: Taxable as a real property service – 6.25% state + up to 2% local = 8.25% combined.
• Repair of residential HVAC: Taxability is more nuanced – consult Texas Comptroller Publication 94-105 for current rules.

City overlay: Local building departments enforce mechanical permits and code compliance. Most major Texas cities adopted some version of the International Mechanical Code (2018, 2021, or 2024 depending on city). Houston (Harris County), Dallas, Austin, San Antonio, and Fort Worth all require mechanical permits for new installations and major changeouts. Permit fees typically scale with system size and project value.

Texas HVAC Market: Where the Demand Is

Texas climate drives perpetual HVAC demand. Annual cooling-degree-days in Houston, Dallas, Austin, and San Antonio rank among the highest in the US – HVAC systems run 8-10 months a year, run hard, and replace every 12-18 years (faster than the 20-year national average). New construction in DFW, Houston, Austin, and San Antonio adds tens of thousands of new units annually.

• Houston metro: Hot-humid climate (Zone 2A in IECC). High latent loads drive demand for variable-speed equipment, dehumidifiers, and proper sizing. Hurricane season (June-November) creates emergency-replacement demand for water-damaged systems.
• Dallas-Fort Worth: Hot-summer continental (Zone 3A). Plano-Frisco-McKinney corporate-relocation corridor + new home construction sustains 5,000+ new system installs/year. Cold snaps (rare but severe) drive backup-heat demand.
• Austin metro: Hot-summer subtropical. Tech-corridor housing growth creates new installation demand. Austin’s progressive energy code adoption sometimes leads cities elsewhere in TX on efficiency standards.
• San Antonio: Hot-summer subtropical. Older housing stock creates retrofit and replacement demand; military bases create steady commercial work.
• El Paso (high desert): Hot-dry climate (Zone 3B). Evaporative cooling more common than central AC; refrigerant cooling demand growing as humidification expectations change.
• Permian Basin (Midland-Odessa): Energy-cycle dependent. Boom periods see 20%+ residential HVAC growth; bust periods compress dramatically.

Cost to Start an HVAC Business in Texas

Item	Cost	Notes
TDLR ACR Contractor License (Class B)	~$230 first-time	$115 application + $115 license; 1-yr validity
TDLR ACR Examination	~$80	PSI Services; multiple endorsements separate
EPA 608 certification	$25-$80	Per technician; lifetime
LLC formation	$300	Form 205, one-time
General liability insurance	$1,500-$3,500/year	Class B $100K/$200K/$100K minimum; most carry $1M/$2M
Workers’ comp (optional)	5-9% of payroll if subscribing	NCCI 5537; non-subscribers $0 with tort exposure
Service van + tools (1 truck startup)	$25,000-$60,000	Used cargo van $15K-$30K; equipped service van $40K+
Manifold gauges (A2L-rated), recovery, vacuum pump	$3,000-$6,000	A2L-compatible new tools required for R-32 / R-454B
OEM training (A2L, manufacturer-specific)	$500-$2,500	Carrier / Trane / Daikin / Lennox / Rheem programs
Software, dispatch, billing (ServiceTitan, Housecall Pro)	$300-$1,500/month	Industry-standard SaaS
Initial inventory + truck stock	$5,000-$15,000	Common parts, capacitors, contactors, filters, refrigerant
ACR Technician Registration (per tech)	$100/tech	$50 app + $50 registration
Estimated total: $40,000-$90,000 to launch a one-truck Texas HVAC operation

Key Texas HVAC Resources

Agency / Resource	What It Covers
Texas TDLR ACR	ACR Contractor License (Class A/B), Technician Registration, exam scheduling
Texas Air Conditioning Contractors Association (TACCA)	Industry trade association; legislative advocacy; training resources
EPA Section 608	Federal refrigerant handling certification – personal lifetime cert
Texas DWC	Workers’ comp regulation; Form DWC-005 non-subscriber reporting
Texas Mutual	Workers’ comp insurer of last resort (must cover any eligible TX employer)
Texas Comptroller	Sales tax permit; HVAC sales tax rules in Publication 94-105
Texas SB 3 (87R, 2021)	Grid weatherization framework – drives backup-heat customer demand

Related Texas Business Guides

• Starting a Business in Texas: Complete Guide

← Back to all Texas business guides

Frequently Asked Questions

What HVAC license do I need in Texas?

The TDLR ACR Contractor License under Texas Occupations Code Chapter 1302. Class A covers any size system; Class B covers cooling up to 25 tons and heating up to 1.5 million BTU/hour (sufficient for virtually all residential and light commercial work). Each license carries one endorsement: Environmental Air Conditioning, Commercial Refrigeration, or Process Cooling and Heating. Application fee $115; license $115; 1-year validity. Non-licensed techs need TDLR ACR Technician Registration ($50 + $50) and work under a licensed contractor.

How long does it take to get a Texas HVAC contractor license?

The experience requirement is 4,000 hours / 48 months of practical experience under licensed supervision within the past 72 months. Alternative path: 12 months as a TDLR-registered Certified Technician plus 36 months experience within 48 months. After experience verification, schedule the TDLR ACR exam through PSI Services (~$80). Total timeline from start to licensed contractor is typically 4-5 years for someone starting as a tech, or 4-12 weeks from experience verification to license issuance.

Is workers’ compensation required for an HVAC business in Texas?

No – Texas is the only state where workers’ comp is optional for private employers. But for HVAC the math rarely favors non-subscriber status. NCCI class code 5537 typically runs 5-9% of payroll if you subscribe – meaningful but not catastrophic. Non-subscribers face uncapped tort exposure when a tech falls off a roof, suffers a refrigerant burn, or is injured handling equipment, and lose common-law defenses (contributory negligence, assumption of risk, fellow servant). Most HVAC operators subscribe through Texas Mutual. Non-subscribers file Form DWC-005.

What is the A2L refrigerant transition and how does it affect Texas HVAC contractors?

Effective January 1, 2025, manufacturers transitioned residential and light commercial systems from R-410A to A2L refrigerants – R-32 (Daikin) and R-454B (Carrier, Trane, Lennox, Rheem). A2Ls are mildly flammable and require A2L-rated manifold gauges and recovery equipment, OEM-specific training, and liquid-state charging procedures (R-454B is a zeotropic blend). New equipment installations in 2026 use A2L; legacy R-410A service continues with reclaimed/recovered refrigerant for the foreseeable future. Operators who handle the transition cleanly close more sales than commodity installers.

How does Winter Storm Uri 2021 affect Texas HVAC business strategy in 2026?

Senate Bill 3 of 2021 imposed grid weatherization on power generators and gas suppliers – it doesn’t change residential HVAC code, but Winter Storm Uri’s February 2021 grid failure created persistent customer demand for systems with backup heat. Texas customers in 2026 routinely ask for dual-fuel heat pumps with propane or gas backup, oversized auxiliary electric strips, cold-climate heat pumps rated below 5°F, or whole-home generators sized for HVAC. Operators who lead with backup-heat reliability narratives close at premium margins.

Is HVAC service taxable in Texas?

It depends on the work classification. New installation is generally a real property improvement – labor is non-taxable, but materials sold to the contractor at retail are taxable. Repair, maintenance, and remodeling of nonresidential property is taxable as a real property service at the full state-plus-local rate (8.25% in major Texas cities). Repair of residential HVAC has more nuanced rules – consult Texas Comptroller Publication 94-105 and the latest taxable services list before pricing your contracts.

How much does it cost to start an HVAC business in Texas?

A one-truck startup typically runs $40,000-$90,000 total. Major costs: $25,000-$60,000 for service van + tools, $3,000-$6,000 for A2L-compatible manifolds and recovery equipment, $1,500-$3,500/year general liability insurance, $300 LLC formation, $230 TDLR licensing fees, $25-$80 EPA 608 certification, $5,000-$15,000 initial truck-stock inventory, and $300-$1,500/month for dispatch/billing software. Workers’ comp adds 5-9% of payroll if subscribing.