HVAC Technician License Requirements in Washington
| Licensing Authority | Department of Labor & Industries (L&I) |
| License Type | Specialty Contractor Registration + Electrical Specialty Certification (06A/06B) |
| Experience Required | HVAC specialty contractor registration: no experience required. 06A electrical specialty: 4,000 hours + 48 hours education. 06B restricted: 2,000 hours + 24 hours education. EPA 608: no experience required but exam is mandatory for refrigerant handling. |
| Education Substitute | Completion of a registered HVAC apprenticeship program satisfies experience and education requirements for 06A/06B certification. |
| Exam Required | Yes — 06A HVAC/R Electrical - NEC & Theory + 06A HVAC/R Electrical - WA Laws & Rules + EPA Section 608 Certification |
| Bond Required | Yes — $15,000 |
| Insurance | General liability: required. Workers comp: required with employees |
| Continuing Education | 24 hours 3 years (for 06A/06B electrical certification) |
| Processing Time | 3-4 weeks for contractor registration; 2-4 weeks for electrical certification |
Fee Breakdown
| Application Fee | $141.10 |
| Exam Fee | $65 |
| Initial License Fee | $107.60 |
| Est. Initial Total | $313.70 |
Related & additional fees
Separate or ongoing costs — not included in the estimate above.
| 06A exam fee (PSI) | $65 |
| 06B exam fee (PSI) | $55 |
| EPA 608 exam fee (varies by provider) | $120 |
| Electrical certification application | $107.60 |
| Electrical certification renewal (3 years) | $76.90 |
Renewal: $141.1 every 2 years (contractor registration); 3 years (electrical certification)
Exam Requirements
06A HVAC/R Electrical - NEC & Theory
06A HVAC/R Electrical - WA Laws & Rules
EPA Section 608 Certification
Exam provider: PSI (L&I exams); EPA-approved providers (608 exam)
Recommended exam prep
Formal prep pays for itself against a $100+ retake. Many states examine contractors on two separate papers — the trade exam and a business and law exam — so we list the course covering both first, with trade-specific depth after.
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Mometrix · SponsoredContractor License Online Study CourseFull online prep course covering the trade and business-and-law exams — video lessons, practice questions, and a study plan built for a first-try pass.See the course →
Mometrix · SponsoredContractor's Exam FlashcardsPortable flashcards for the high-frequency exam topics — a cheaper add-on for drilling terms and code references on the go.See the flashcards →Set up the business before you apply in Washington
Most states license the company as well as the person, so the application usually asks for an LLC or corporation and a registered agent in Washington. Northwest forms the entity and acts as your registered agent — a flat fee, no upsell funnel.
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Form an LLC with Northwest→License Tiers
HVAC Specialty Contractor (Registration Only)
No experience required for contractor registration itself.
Exam: Not required
06A - HVAC/Refrigeration Electrician
4,000 hours (2+ years) of HVAC/R electrical work plus 48 hours of education. Not limited by voltage, phase, or amperage for HVAC/R systems.
Exam: Required
06B - HVAC/Refrigeration Restricted Electrician
2,000 hours (1+ year) of HVAC/R electrical work plus 24 hours of education. Limited to 250V single phase or 120 amps.
Exam: Required
EPA Section 608 Certification (Federal)
No experience required. Federal requirement for handling refrigerants.
Exam: Required
Notes
- Washington has a layered HVAC licensing system: contractor registration (L&I) + electrical specialty certification (06A or 06B) + federal EPA 608
- 06A is unrestricted by voltage/phase/amperage for HVAC/R systems in all occupancies
- 06B is restricted to 250V single phase or 120 amps; limited to residential and buildings up to 3 stories
- Contractor registration has no exam or experience requirement, but electrical certification does
- EPA Section 608 is a federal requirement — Types I, II, III, or Universal based on equipment serviced
- Seattle requires separate gas piping mechanic and refrigeration mechanic city licenses
- 2024 change: Specialty contractor bond increased from $6,000 to $15,000
You're licensed in Washington as an HVAC technician — the next 30 days
Most of the steps below are required before your first paid job; the order is the order the state and its counties will ask for them.
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Form the business and get an EIN.
The Department of Labor & Industries issues the Specialty Contractor Registration + Electrical Specialty Certification (06A/06B); the business that invoices Washington customers is a separate decision. A sole proprietorship is the default, an LLC keeps business liability off your personal assets, and either needs an EIN before the first payroll. Settle it before the license number goes on an estimate.
Post the bond.
Washington requires a $15,000 surety bond. Specialty contractor bond of $15,000 (increased from $6,000 on July 1, 2024). If also operating as an electrical contractor, a separate $4,000 electrical contractor bond is required. How contractor bonds work→
Carry the insurance the license requires.
Washington requires general liability insurance for this license. General liability: $250,000 combined single limit (or $200,000 bodily injury + $50,000 property damage). Workers comp through WA State Fund (L&I) required with employees. Contractor insurance requirements→
Register locally.
Seattle requires gas piping mechanic license, journey refrigeration mechanic license, and refrigeration/AC contractor license. Other municipalities may have additional requirements.
Set up quoting, scheduling and invoicing before the first call.
Your first customers will ask for a written estimate and expect to pay by card on site. Most one-truck HVAC technician businesses run that on field-service software; Housecall Pro is the one we link because it is built for this size of company and this link carries 20% off your first 12 months. Start a free trial of Housecall Pro→
Keep the license.
Renewal is every 2 years (contractor registration); 3 years (electrical certification) at $141.10. Continuing education: 24 hours every 3 years (for 06A/06B electrical certification)
Other licenses in Washington
- General Contractor license in Washington
Statewide registration, not a license · $150.2 in fees · L&I
- Electrician license in Washington
Statewide license required · $280.2 in initial government fees · L&I
- Plumber license in Washington
Statewide license required · $497.7 in initial government fees · L&I
- Roofing Contractor license in Washington
Statewide registration, not a license · $141.1 in fees · L&I
Frequently Asked Questions
Do I need an hvac technician license in Washington?
Yes, Washington requires a statewide hvac technician license through the Department of Labor & Industries.
How much does an hvac technician license cost in Washington?
The estimated initial cost is $313.7, including application, exam, and license fees. A $15,000 surety bond is also required.
What experience do I need for an hvac technician license in Washington?
HVAC specialty contractor registration: no experience required. 06A electrical specialty: 4,000 hours + 48 hours education. 06B restricted: 2,000 hours + 24 hours education. EPA 608: no experience required but exam is mandatory for refrigerant handling. Education substitute: Completion of a registered HVAC apprenticeship program satisfies experience and education requirements for 06A/06B certification.
What exams are required for an hvac technician license in Washington?
You must pass the 06A HVAC/R Electrical - NEC & Theory and 06A HVAC/R Electrical - WA Laws & Rules and EPA Section 608 Certification exams. A passing score of 70% (L&I exams); 70% per section (EPA 608) is required. Exams are administered by PSI (L&I exams); EPA-approved providers (608 exam).
Do I need a bond for an hvac technician license in Washington?
Yes, a $15,000 surety bond is required. Specialty contractor bond of $15,000 (increased from $6,000 on July 1, 2024). If also operating as an electrical contractor, a separate $4,000 electrical contractor bond is required.
How long does it take to get an hvac technician license in Washington?
Processing time is typically 3-4 weeks for contractor registration; 2-4 weeks for electrical certification after submitting a complete application.
Is continuing education required for hvac technicians in Washington?
Yes, 24 hours per 3 years (for 06A/06B electrical certification) is required for license renewal.
Next steps
You know the requirements for hvac technicians in Washington— here's how to actually pass and apply.
Data last verified: 2026-04-02 | Source: L&I