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HVAC: EPA 608 Certification Study Guide Questions and Answers, Graded A+2023/2024
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HVAC: EPA 608 Certification Study Guide Questions and Answers, Graded A+2023/2024 Are there drop-in replacements for R-12 systems? Why or why not? - CORRECT ANSWER-No because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. What type of oil is used in...
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