Factory-sealed appliances with 5 lb or less of refrigerant: the 80%/90% recovery percentages, the dead-compressor rule, system-dependent equipment limits, and the 4-inch vacuum alternative. Every answer shows the rule and its citation.
Rules current as of October 21, 2026.
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Studying for the real exam, or a certified tech checking the new rules? Either way, if an old study guide disagrees with an answer here, the citation under the answer is the one to trust.
