RSES Study Guide 2026
Everything you need to pass the RSES exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 RSES Exam Format at a Glance
📚 RSES Topics to Study (71)
✍️ Sample RSES Questions & Answers
1. What is the purpose of a capacitor in a motor circuit?
To provide a starting or running boost for motors.
2. Which risk management approach is MOST effective for RSES professionals when evaluating potential workplace hazards?
Proactive hazard identification and assessment allows professionals to identify and mitigate risks before incidents occur, which is far more effective than reactive approaches that only address problems after they happen.
3. When brazing refrigerant lines, what gas must flow through the tubing to prevent oxide scale formation and reduce fire risk?
Dry nitrogen purged through tubing during brazing prevents internal oxidation scale and keeps flammable refrigerant vapors purged from the work area.
4. A technician finds that a customer's R-22 system is leaking. Under current EPA rules, what must the technician do?
R-22 is still legal to use in existing equipment with reclaimed or recovered refrigerant; the technician must recover and repair per Section 608 rules.
5. Which document typically outlines the compliance requirements for RSES professionals?
Standards of practice and codes of conduct define the professional and ethical requirements practitioners must follow.
6. A refrigeration system uses a capillary tube metering device and is suspected of being undercharged. How is the charge typically verified on this type of system?
Capillary tube systems are critically charge-sensitive and are best charged by weighing the exact factory specification into an evacuated system.