CSLB C-20 HVAC ContractorCooling and RefrigerationHard
Per common industry convention for refrigerant cylinder color coding (AHRI guideline colors), what color is a virgin R-410A refrigerant cylinder typically painted?
- ARose/pink
- BYellow
- CLight blue
- DDark green
Show answer & explanationAnswer & explanation
Correct answer: A. Rose/pink
Industry convention assigns rose (pink) as the standard cylinder color for R-410A, distinguishing it from R-22 (light green), R-134a (light blue), and R-404A (orange). Technicians rely on these colors for quick visual identification, though the label must always be verified.
Why the other options are wrong
- B. Yellow is not a standard AHRI-assigned refrigerant cylinder color for common HVAC refrigerants.
- C. Light blue is associated with R-134a, not R-410A.
- D. Green is associated with R-22, not R-410A.
Refrigerant Cylinder Color Coding
AHRI industry convention assigns specific cylinder colors to common refrigerants for quick identification, though labels must always be verified before use.
- R-410A = rose/pink
- R-22 = light green
- R-134a = light blue
- Color is a convention, not a legal guarantee — always check the label
Memory trick: Pink cylinder, 410A inside.