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  1. Test Topics | US EPA - U.S. Environmental Protection Agency

  2. Section 608 Technician Certification | US EPA - U.S. Environmental ...

  3. Section 608 Technician Certification Requirements | US EPA

  4. EPA’s Refrigerant Management Program: Questions and Answers …

  5. Section 609 Technician Training and Certification Programs

  6. Certification Programs for Section 608 Technicians | US EPA

  7. Section 608 Technician Certification | US EPA - U.S. Environmental ...

  8. Stationary Refrigeration and Air Conditioning | US EPA

  9. EPA Guidance Documents | US EPA - U.S. Environmental …

  10. Resources for Stationary Refrigeration and Air-Conditioning …