HVAC Exam Prep / Washington
HVAC — WA
How to Get Your HVAC License in Washington
To work as a licensed HVAC technician in Washington, you need EPA 608 federal certification plus the state HVAC/Refrigeration Contractor License issued through Washington Labor & Industries. Here's everything you need to know.
License Details
- State License Name
- HVAC/Refrigeration Contractor License
- Licensing Body
- Washington Labor & Industries
- Exam Provider
- PSI Exams
- Passing Score
- 75%
- Exam Fee
- $44
- Federal EPA 608
- Required — Universal recommended
Note: Always verify current requirements with Washington Labor & Industries.
Washington HVAC Notes
EPA 608 required. Washington requires 75% to pass. Separate endorsements for residential and commercial HVAC.
About the EPA 608 Exam
The EPA 608 Universal exam has 100 questions across 4 sections (Core, Type I, II, III). You must score 70% on each section independently. The Core covers environmental regulations, leak rates, and safe refrigerant handling. Types I–III cover equipment- specific recovery and service procedures. The exam is closed-book.
How to Become a Licensed HVAC Technician in Washington
- 1
Get your EPA 608 Certification
EPA 608 is a federal requirement for anyone who purchases, handles, or recovers refrigerants. You must pass the Core section plus at least one Type (I, II, or III) — passing all four earns Universal certification. Universal certification is strongly recommended for HVAC technicians working on residential and commercial systems.
- 2
Gain field experience (Washington requirement)
Washington HVAC licensing typically requires documented field experience under a licensed contractor. Most states require 2–5 years of hands-on experience. Keep records of your work hours and employers — you will need to submit these with your license application.
- 3
Pass the state or local trade exam
The HVAC/Refrigeration Contractor License requires passing a written trade exam administered by PSI Exams. The exam covers HVAC systems, refrigerant handling, local codes, and safety regulations. Passing score is 75%. Exam fee is $44.
- 4
Apply for your license
Submit your application to Washington Labor & Industries with proof of experience, EPA 608 certification, exam results, and any required insurance or bond documentation. Processing times vary — apply early and keep copies of all submitted materials.
- 5
Maintain your license
Most HVAC licenses require renewal every 1–3 years with continuing education (CE) hours. Stay current with new refrigerant regulations (particularly HFC phase-downs under the AIM Act) and updated equipment standards to maintain your license without interruption.