CFC Cheat Sheet 2026

The 30 highest-yield CFC facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. Which regulatory framework governs the labeling, marking, and transportation requirements for refrigerant cylinders shipped in the United States? → DOT Hazardous Materials Regulations under 49 CFR
2. Which of the following best describes a key competency required for commercial refrigeration systems in CFC practice? → Strong analytical skills combined with effective communication and ethical judgment
3. How does EPA Section 608 certification differ from Section 609 certification? → Section 608 covers stationary refrigeration and AC; Section 609 covers motor vehicle AC
4. What field test can be used to check for the presence of non-condensable gases in a refrigerant cylinder? → Compare cylinder pressure to the P-T chart value for the measured cylinder temperature
5. Which industry standard defines the purity specifications that reclaimed refrigerants must meet before resale? → AHRI Standard 700
6. Which organization certifies refrigerant reclamation facilities in the United States? → The EPA (Environmental Protection Agency)
7. In the context of CFC certification, what is the most important consideration when implementing automotive air conditioning service? → Ensuring alignment with established standards, stakeholder needs, and best practices
8. A technician holds Type I and Type II certifications. Which additional certification would allow them to service all equipment types? → Type III certification
9. Which AHRI standard establishes purity specifications that reclaimed refrigerants must meet before resale or reuse? → AHRI 700
10. When should refrigerant be recovered from an HVAC system? → Before opening or servicing the system
11. What is the main purpose of EPA regulations related to refrigerants? → To protect the ozone layer and ensure safe refrigerant handling
12. What is the ASHRAE numerical designation for the refrigerant formerly known by the trade name Freon-12? → R-12
13. Who is legally authorized to reclaim refrigerants to AHRI 700 purity standards for resale? → EPA-certified reclamation facilities only
14. Which of the following best describes a key competency required for refrigerant cylinder & storage safety in CFC practice? → Strong analytical skills combined with effective communication and ethical judgment
15. Which safety practice is essential when handling refrigerants? → Use PPE and ventilated areas for handling
16. What is the significance of a refrigerant's Global Warming Potential (GWP) value? → It compares the refrigerant's heat-trapping ability to CO2 over a 100-year period
17. What color coding identifies recovery cylinders used for recovered or recycled refrigerants? → Gray body with a yellow top
18. What is the standard cylinder color for R-22 refrigerant per AHRI color-coding standards? → Light green
19. A technician receives an unlabeled cylinder of refrigerant. What is the FIRST step they should take? → Identify the refrigerant using an analyzer
20. What is the maximum allowable moisture content in reclaimed refrigerant per AHRI Standard 700? → 10 ppm by weight
21. Which part of the HVAC system is most commonly prone to leaks? → Coils and fittings
22. When using a refrigerant identifier and receiving a 'FAIL - mixed refrigerant' reading, what does this indicate? → The cylinder contains two or more different refrigerants blended together
23. What is the standard cylinder color assigned to R-12 refrigerant? → White
24. Can an uncertified individual purchase refrigerant in containers larger than 2 pounds? → No, only EPA-certified technicians may purchase such containers
25. What documentation should an EPA-certified reclamation facility provide when returning reclaimed refrigerant? → A certificate confirming the refrigerant meets AHRI 700 specifications
26. Under EPA rules, who bears primary responsibility for ensuring that reclaimed refrigerant meets AHRI 700 purity standards? → The EPA-certified reclaimer
27. What is the standard AHRI cylinder color for R-134a refrigerant? → Sky blue
28. Which refrigerant detection method is the fastest? → Electronic detectors
29. What is required before opening any appliance containing refrigerant? → Recover the refrigerant using approved methods
30. A technician who services residential split systems using R-22 must hold which Section 608 certification type? → Type II