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A low-pressure refrigerant has liquid saturation pressure below what value at 104 F?

Below 45 psia at 104 F.

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  1. 170 psia
  2. 45 psia ✔
  3. 355 psia

Why: EPA calls an appliance low-pressure if its refrigerant's liquid saturation pressure is below 45 psia at 104 F. Examples are R-11, R-123, R-113 and R-245fa.

Huh, didn't know that: Low-pressure appliances are covered by Type III certification.

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References

Answer: 45 psia. EPA calls an appliance low-pressure if its refrigerant's liquid saturation pressure is below 45 psia at 104 F. Examples are R-11, R-123, R-113 and R-245fa.

  1. 40 CFR 82.152 Definitions (Cornell LII) www.law.cornell.edu/cfr/text/40/82.152
    uses a refrigerant with a liquid phase saturation pressure below 45 psia at 104 °F
    Checked 2026-10-10.
  2. 40 CFR 82.152 Definitions (Cornell LII) www.law.cornell.edu/cfr/text/40/82.152
    appliances using R-11, R-123, R-113, and R-245fa
    Checked 2026-10-10.

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