Washington HVAC License Requirements

Official classification: HVAC/R Specialty Contractor Registration + HVAC/Refrigeration Specialty Electrician Certificate (where electrical work is performed) · Issued by the Washington Department of Labor & Industries (L&I).

❄️ HVACWA ✔ Verified 2026-06-22

In Washington, HVAC contractors must hold the HVAC/R Specialty Contractor Registration + HVAC/Refrigeration Specialty Electrician Certificate (where electrical work is performed), issued by the Washington Department of Labor & Industries (L&I), and a $15,000 surety bond is required. Full requirements — experience, exams, fees, insurance, renewal and reciprocity — are detailed below.

How to become a licensed HVAC contractor in Washington

Follow these steps to earn your HVAC/R Specialty Contractor Registration + HVAC/Refrigeration Specialty Electrician Certificate (where electrical work is performed). Every figure is verified against the Washington Department of Labor & Industries (L&I); full detail for each step is further down the page.

Build the required experience. HVAC contractor registration: no experience requirement. Individual HVAC/Refrigeration Specialty Electrician (06A): 4,000 hours in the HVAC/refrigeration specialty plus 48 hours of basic electrical classroom instruction. HVAC/Refrigeration Restricted (6B): 2,000 hours in the specialty plus 24 hours of classroom instruction. Master (06A or 6B): 2 years as a certified specialty electrician in the relevant specialty.
Pass the Specialty Electrician Exam — HVAC/Refrigeration System (06A) and Specialty Electrician Exam — HVAC/Refrigeration Restricted (6B) and Master Electrician Exam — HVAC/Refrigeration (06A) and Master Electrician Exam — HVAC/Refrigeration Restricted (6B) exams. Providers, passing scores and fees are in the Exams section below.
Secure your surety bond. Washington requires $15,000 Washington Continuous Contractor's Surety Bond (HVAC specialty contractor registration).
Line up insurance. You'll need liability insurance ($200,000 public liability + $50,000 property damage, or $250,000 combined single limit (HVAC contractor registration); L&I must be listed as certificate holder.), and workers' compensation coverage.
Clear the background check. Not publicly required by L&I (official L&I pages do not mention a criminal background check for contractor registration or specialty electrician certificates).
Submit your application and fees. Apply through the Washington Department of Labor & Industries (L&I) — $141.10 (HVAC specialty contractor registration); $107.60 (specialty electrician certificate); $192.10 (master electrician certificate) application fee, plus a Included in application fees above license fee. Processing time: Contractor registration: 3–4 weeks by mail; same-day if in-person with complete documents. Individual electrician certificates: varies; contact L&I Electrical Program at 360-902-5269.
Keep the license active. Renew hVAC contractor registration: every 2 years. Individual electrician certificates: every 3 years on birthdate., completing HVAC contractor registration: none required. Individual HVAC/Refrigeration Specialty Electrician certificates: 24 hours per 3-year cycle (8 hours current NEC, 4 hours RCW/WAC, 12 hours approved topics).

License types

HVAC Specialty Contractor Registration (trade code SM) — Business-entity registration required to contract for HVAC work in Washington. Specialty contractors may only perform work in their registered specialty and may not hire subcontractors.
Specialty Electrician — HVAC/Refrigeration System (06A) — Individual electrician certificate required for technicians performing electrical work on HVAC/refrigeration systems. Requires 4,000 hours of experience in the specialty.
Specialty Electrician — HVAC/Refrigeration Restricted (6B) — Limited scope HVAC/refrigeration electrical certificate. Requires 2,000 hours of experience in the specialty.
Master Electrician — HVAC/Refrigeration (06A or 6B) — Advanced electrical supervision certificate for HVAC work; required for designated supervisor on electrical contractor license.

Requirements at a glance

Experience required	HVAC contractor registration: no experience requirement. Individual HVAC/Refrigeration Specialty Electrician (06A): 4,000 hours in the HVAC/refrigeration specialty plus 48 hours of basic electrical classroom instruction. HVAC/Refrigeration Restricted (6B): 2,000 hours in the specialty plus 24 hours of classroom instruction. Master (06A or 6B): 2 years as a certified specialty electrician in the relevant specialty.
Application fee	$141.10 (HVAC specialty contractor registration); $107.60 (specialty electrician certificate); $192.10 (master electrician certificate)
License fee	Included in application fees above
Renewal fee	HVAC specialty contractor registration: $141.10 every 2 years; Specialty Electrician certificate: $87.00 (online) / $99.90 (mail) every 3 years; Master Electrician: $165.00 (online) / $189.90 (mail) every 3 years
Renewal period	HVAC contractor registration: every 2 years. Individual electrician certificates: every 3 years on birthdate.
Continuing education	HVAC contractor registration: none required. Individual HVAC/Refrigeration Specialty Electrician certificates: 24 hours per 3-year cycle (8 hours current NEC, 4 hours RCW/WAC, 12 hours approved topics).
Bond required	$15,000 Washington Continuous Contractor's Surety Bond (HVAC specialty contractor registration)
Liability insurance	$200,000 public liability + $50,000 property damage, or $250,000 combined single limit (HVAC contractor registration); L&I must be listed as certificate holder.
Property damage	$50,000 (standalone); or included in $250,000 combined single limit
Workers' comp	Required through L&I state fund if the business employs workers (Washington is a monopolistic workers' compensation state).
Background check	Not publicly required by L&I (official L&I pages do not mention a criminal background check for contractor registration or specialty electrician certificates).
Credit requirement	None
Reciprocity	None — Washington does not have reciprocity agreements with other states for HVAC/Refrigeration specialty electrician certificates or HVAC contractor registration.
Processing time	Contractor registration: 3–4 weeks by mail; same-day if in-person with complete documents. Individual electrician certificates: varies; contact L&I Electrical Program at 360-902-5269.

Exams

Specialty Electrician Exam — HVAC/Refrigeration System (06A)	Provider: PSI (for L&I) · Passing: 70% or greater on each section · Fee: $65 exam fee; $107.60 application/certificate fee
Specialty Electrician Exam — HVAC/Refrigeration Restricted (6B)	Provider: PSI (for L&I) · Passing: 70% or greater on each section · Fee: $55 exam fee; $107.60 application/certificate fee
Master Electrician Exam — HVAC/Refrigeration (06A)	Provider: PSI (for L&I) · Passing: 70% or greater on each section · Fee: $75 exam fee; $192.10 application/certificate fee
Master Electrician Exam — HVAC/Refrigeration Restricted (6B)	Provider: PSI (for L&I) · Passing: 70% or greater on each section · Fee: $65 exam fee; $192.10 application/certificate fee

Preparing for the HVAC exam? State-specific contractor exam-prep courses help you pass the first time. Start exam prep →

Local / municipal notes

Federal EPA Section 608 certification (Universal or applicable type) is required for any technician handling refrigerants under the Clean Air Act — this is a federal requirement separate from state registration. Seattle requires separate local refrigeration mechanic licenses for commercial refrigeration work. Spokane requires a commercial gas heating mechanic license.

Frequently asked questions

How much does a Washington hvac license cost?

Application: $141.10 (HVAC specialty contractor registration); $107.60 (specialty electrician certificate); $192.10 (master electrician certificate). License: Included in application fees above. Renewal: HVAC specialty contractor registration: $141.10 every 2 years; Specialty Electrician certificate: $87.00 (online) / $99.90 (mail) every 3 years; Master Electrician: $165.00 (online) / $189.90 (mail) every 3 years.

Do hvacs in Washington need a surety bond?

$15,000 Washington Continuous Contractor's Surety Bond (HVAC specialty contractor registration)

What experience is required for a Washington hvac license?

HVAC contractor registration: no experience requirement. Individual HVAC/Refrigeration Specialty Electrician (06A): 4,000 hours in the HVAC/refrigeration specialty plus 48 hours of basic electrical classroom instruction. HVAC/Refrigeration Restricted (6B): 2,000 hours in the specialty plus 24 hours of classroom instruction. Master (06A or 6B): 2 years as a certified specialty electrician in the relevant specialty.

Is insurance required for hvacs in Washington?

Liability: $200,000 public liability + $50,000 property damage, or $250,000 combined single limit (HVAC contractor registration); L&I must be listed as certificate holder. Workers' compensation: Required through L&I state fund if the business employs workers (Washington is a monopolistic workers' compensation state).

How often must a Washington hvac license be renewed?

HVAC contractor registration: every 2 years. Individual electrician certificates: every 3 years on birthdate.. Continuing education: HVAC contractor registration: none required. Individual HVAC/Refrigeration Specialty Electrician certificates: 24 hours per 3-year cycle (8 hours current NEC, 4 hours RCW/WAC, 12 hours approved topics).

Fees and rules change frequently (often annually). This page was last verified on 2026-06-22 — always confirm current requirements directly with the Washington Department of Labor & Industries (L&I) before applying. This is not legal advice.