SESK: Stuff Everyone Should Know · sesk.info/epa-avoid-mixing-refrigerants
When recovering refrigerant, what does EPA's Core outline say technicians need to avoid?
Mixing refrigerants in the same recovery cylinder.
- Recovering liquid before vapor
- Weighing the cylinder while filling
- Mixing different refrigerants together ✔
Why: EPA's Core topics list the need to avoid mixing refrigerants. Reclaimers must bring each refrigerant back to its own purity specs, so a mixed batch may not be reclaimable.
Huh, didn't know that: EPA's Type 2 outline says recovering liquid at the start of recovery speeds up the process.
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References
Answer: Mixing different refrigerants together. EPA's Core topics list the need to avoid mixing refrigerants. Reclaimers must bring each refrigerant back to its own purity specs, so a mixed batch may not be reclaimable.
- Section 608 Technician Certification Test Topics, US EPA www.epa.gov/section608/section-608-technician-certification-test-topics
Need to avoid mixing refrigerants
Checked 2026-10-10. - 40 CFR 82.152 (Cornell LII) www.law.cornell.edu/cfr/text/40/82.152
to all of the specifications in appendix A of this subpart
Checked 2026-10-10.
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