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Low-pressure appliance, refrigerant boils at or below 85 F. Which pressurizing method may you not use?

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  1. Nitrogen that requires purging afterward
  2. Controlled hot water
  3. A built-in heating device

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References

  1. 40 CFR 82.156 Required practices (Cornell LII) www.law.cornell.edu/cfr/text/40/82.156 Checked 2026-10-10.
  2. EPA Section 608 Technician Certification Test Topics www.epa.gov/section608/test-topics Checked 2026-10-10.

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Trades & ShopNon-major repair on a low-pressure appliance that won't be evacuated to atmosphere afterward. Pressurize to what before opening?Trades & ShopWhich of these is exempt from the EPA venting prohibition in any application?Trades & ShopWhich gas should be used to pressurize a system for leak testing?

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