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HVAC: EPA 608 Certification Study Guide A+ Graded
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Are there drop-in replacements for R-12 systems? Why or why not? - No because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. What type of oil is used in R-134a and what oils will it mix with? - Ester based oils and they do not mix with other oils
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HVAC: EPA 608
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HVAC: EPA 608
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are there drop in replacements for r 12 systems w
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