SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/epa-never-refill-disposable

A disposable refrigerant cylinder is empty. What should you never do with it?

Never refill a disposable cylinder.

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  1. Recycle it as scrap metal
  2. Label it as empty
  3. Refill it ✔

Why: Disposable cylinders are not built for repeated filling. Use DOT-approved reusable recovery cylinders for recovered refrigerant.

Huh, didn't know that: Under EPA's 2024 rule, a 608-certified tech may instead evacuate a disposable cylinder to 15 inches of mercury before disposal.

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How many books can you put into an empty backpack? One! After that it's not empty.
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References

Answer: Refill it. Disposable cylinders are not built for repeated filling. Use DOT-approved reusable recovery cylinders for recovered refrigerant.

  1. Section 608 Technician Certification Test Topics, US EPA www.epa.gov/section608/section-608-technician-certification-test-topics
    never refill latter
    Checked 2026-10-10.
  2. Emissions Reduction and Reclamation Program fact sheet, US EPA www.epa.gov/system/files/documents/2024-09/err-fact-sheet.pdf
    evacuates a disposable cylinder to a vacuum level of 15 in-Hg
    Checked 2026-10-10.

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