Refrigeration Service Engineers Society Certification
Free rses scale practice test with 20 questions and answer explanations. Prepare for the 2026 exam with instant feedback and full study guides.
About the Author
Mike JohnsonNATE Certified, EPA 608, BS HVAC/R Technology
NATE Certified HVAC Technician & Licensing Exam Trainer
Universal Technical InstituteMike Johnson is a NATE-certified HVAC technician and EPA 608 universal-certified refrigerant handler with a Bachelor of Science in HVAC/R Technology. He has 19 years of commercial and residential HVAC installation and service experience and specializes in preparing technicians for NATE certification, EPA 608, A2L refrigerant safety, and state HVAC contractor licensing examinations.