HVAC Exam Prep / Washington
HVAC — WA
HVAC Exam & Licensing in Washington
EPA 608 certification is required federally. Here's how to get your state HVAC contractor license in Washington on top of it.
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.