HVAC EPA Type I Practice Test

Noncondensable gases inside a recovery cylinder are defined as gases that do what under ambient conditions?

Gases that do not condense at ambient temperature Refrigerant mixed with oil Gases that condense at room temperature Gas that remains liquid

Correct Answer:

Gases that do not condense at ambient temperature

Explanation:

Noncondensable gases are those that stay in the gaseous state at ambient (room) conditions. In a recovery cylinder, this means air, moisture, or other gases won’t liquefy under normal room temperatures and pressures. Their presence takes up volume and raises pressure, which can hinder efficient refrigerant recovery and skew measurements. The idea is that noncondensables do not condense into liquid at ambient conditions, unlike the refrigerant itself, which can liquefy under the right conditions.

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