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Exam (elaborations)

A2L- Practice 2ESCO Low GWP Questions and Answers.
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2

May 2026

2025/2026

A+
A2L systems are designed with electrical components that are _____________ ____. - Answer Intrinsically Safe (IS) When preforming repairs on a system that is charged with an A2L refrigerant, discharge capacitors with a ________. - Answer resistor When preforming repairs on a system that is charged with an A2L refrigerant, replace components only with parts _________ __ ___ ____________. - Answer specified by the manufacturer (OEM) The tools used for the recovery of A2L...
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A2L's-HVAC-R Test: Basic science & A2L's Test Questions Fully Solved.
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6

May 2026

2025/2026

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What is refrigeration? - Answer The transfer of heat from one place to another by a change of state of a liquid. What is refrigeration as it pertains to air conditioning? - Answer The process of transferring heat from a place it is not wanted to a place where we don't care. How is temperature defined? - Answer As the measurement of the "Intensity" of heat, but does not in anyway indicate the quantity of heat. What is a British thermal unit (BTU)? - Answer ...
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A2L -EPA Section 608 Preparatory Manual: Core and Type 1 technician Questions Solved Correctly.
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11

May 2026

2025/2026

A+
What ozone layer is earth's protective shield? - Answer Stratospheric ozone What is ODP? - Answer Ozone Depletion Potential. Measures the ability of a substance to destroy ozone in the stratosphere. How does depleting stratospheric layer affect humans and environment - Answer Global Warming. Skin cancer. Cataracts. Decreased Crop yield Damage to Marine organisms Which chemical containing refrigerants affect the depletion of the stratospheric layer? - Answer ...
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Exam (elaborations)

A2L -Low Global Warming Potential (LGWP) 4B9 Ch1 Test Questions Answered Correctly.
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12

May 2026

2025/2026

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First fundamental principle of refrigeration: - Answer A substance must absorb or reject latent heat in order to change state. Refrigerants - Answer Liquids that boil below the freezing point of water. - continuously draws heat away from a body of water Second fundamental principle of refrigeration: - Answer The pressure exerted on the surface of a boiling liquid affects the temperature at which the liquid boils. Saturation temperature - Answer the temperature ...
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Exam (elaborations)

A2L -Low Global Warming Potential (LGWP) MACS 609 CERTIFICATION Exam and All Actual Answers.
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5

May 2026

2025/2026

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The use of ultraviolet (UV) or fluorescent dyes in an HFO-1234yf system is: - Answer Approved by some vehicle manufactures but not by others One effect of some refrigerant gases in the atmosphere is that they: - Answer Contribute to trapping heat Which item is not mentioned in the SAE J2099 Standard of refrigerant purity? - Answer Sludge When it has been determined that an A/C system has a low refrigerant charge, what should be done? - Answer Perform a leak test ...
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Exam (elaborations)

A2L-Core pt3 Introduction to Refrigerating Test Questions with All Actual Answers 2026.
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16

May 2026

2025/2026

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.Which of the following refrigerants has the lowest global warming potential? - Answer R-600 How does the global warming potential of R-410A compare to carbon dioxide? - Answer They are equal. How do the global warming potentials of isobutane (R-600a), propane (R-290), and R-441A compare to the GWPs of HFC-134a, R-404A, and R-410A? - Answer They are significantly lower What is the state of the refrigerant entering the compressor of a refrigeration system? - Answer ...
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Exam (elaborations)

A2L-Refrigerant Tips and Techniques Questions and All Correct Answers 2025-2026 Updated.
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May 2026

2025/2026

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Section 608 Certification - Answer Allows tech/engineer to purchase or handle controlled refrigerants. Responsibilities of tech with 608 cert - Answer Keep up with EPA regulations and if you loose cert card get a replacement from company that provided cert What molecules are present in the ozone in the stratosphere above earth - Answer O_3 What oxygen molecule do we breathe - Answer O_2 What does the ozone layer consist of - Answer Ozone in the stratosph...
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Exam (elaborations)

Low GWP- Test Questions With Correct Answers.
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4

May 2026

2025/2026

A+
The min. concentration of a refrig that can propagate a flame through consistent mixture of the refrig. and air is; - Answer C - lower flammability limit (LFL). 2 - Refrigerant cylinders should be transported in the upright position to ensure; - Answer C - Pressure relief valve 3 - Tools used during the installation or service of systems charged with a flammable refrigerant must be; - Answer D - rated for use with flammable refrigerants 4 - The first stage of the evacu...
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Exam (elaborations)

Low GWP Refrigerant Safety: A2L Refrigerants (Mildly Flammable)
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May 2026

2025/2026

A+
The process of transferring refrigerant from a sealed system to a refillable cylinder (recovery tank) approved by the Department of Transportation (DOT) is called - Answer recovery If different refrigerant types are mixed in the same tank, the mixture may not be able to be recycled or reclaimed and may have to be - Answer destroyed at the owner's expense Department of Transportation (DOT) standards require that a recovery tank should not be fill beyond what percent of its ca...
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Exam (elaborations)

Low GWP Refrigerant Safety: A2L Refrigerants (Mildly Flammable) Questions and Answers.
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3

May 2026

2025/2026

A+
The process of transferring refrigerant from a sealed system to a refillable cylinder (recovery tank) approved by the Department of Transportation (DOT) is called - Answer recovery If different refrigerant types are mixed in the same tank, the mixture may not be able to be recycled or reclaimed and may have to be - Answer destroyed at the owner's expense Department of Transportation (DOT) standards require that a recovery tank should not be fill beyond what percent of its capaci...
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