NATE Low-GWP Practice Questions - NATE Low-GWP Refrigerants Certification Exam

Under the ASHRAE 34 safety classification system, what does the 'A2L' designation indicate about a refrigerant?

Higher toxicity, non-flammable Lower toxicity, mildly (lower) flammable Higher toxicity, highly flammable Lower toxicity, non-flammable

Lower toxicity, mildly (lower) flammable

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