Refrigerant blends take on the ASHRAE number of the main refrigerant blend.

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Multiple Choice

Refrigerant blends take on the ASHRAE number of the main refrigerant blend.

Explanation:
Understanding how refrigerant blends are named helps here. Each refrigerant, including blends, has an ASHRAE designation that is a unique label assigned to that specific mixture. The number in the designation for a blend does not come from or reflect a single “main” component. For example, R-410A is a blend of R-32 and R-125, yet its designation is 410A, not tied to either component’s number. The labeling is just an identifier for the blend, and the exact composition is found in the spec sheet. So the statement is not correct: blends do not take on the ASHRAE number of the main refrigerant.

Understanding how refrigerant blends are named helps here. Each refrigerant, including blends, has an ASHRAE designation that is a unique label assigned to that specific mixture. The number in the designation for a blend does not come from or reflect a single “main” component. For example, R-410A is a blend of R-32 and R-125, yet its designation is 410A, not tied to either component’s number. The labeling is just an identifier for the blend, and the exact composition is found in the spec sheet. So the statement is not correct: blends do not take on the ASHRAE number of the main refrigerant.

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