P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
EPA 608 Core Certification
Exam Questions & Answers
2026/2027 Updated Edition
(Rationales)
Verified Answers Exam Ready With Rationales 65 QUESTIONS
DOCUMENT OVERVIEW
This document provides 65 EPA 608 Core Certification exam questions with provided
correct answers and detailed rationales, including diagrams. It covers fundamental HVAC
refrigerant principles, making it ideal for study, review, and comprehensive certification
preparation.
TOPICS
Refrigerant Handling & Recovery Q1–Q22
System Pressures, Temperatures & Safety Q23–Q35
Refrigerant Fundamentals & Classifications Q36–Q49
Environmental Impact & Regulations Q50–Q53
Refrigeration System Components & Cycle Q54–Q65
E XA M Q U EST I O N S
Q1 QUESTION 1 OF 65
To process refrigerant to a level that is equal to new product specifications as
Page 1
, ANSWER
Reclaiming
RATIONALE
Reclaiming refrigerant involves processing used refrigerant to meet new product specifications,
ensuring purity and quality. This process is distinct from recycling, which only cleans refrigerant for
immediate reuse within the same system. Reclaiming is mandated by EPA regulations for safe and
effective refrigerant management.
Q2 QUESTION 2 OF 65
Recover any remaining refrigerant and then render the cylinder useless, then recycle the
metal is the proper disposal method for;
ANSWER
disposable cylinders
RATIONALE
Disposable refrigerant cylinders are designed for single use and cannot be safely refilled or reused
once emptied. Proper disposal mandates reclaiming any residual refrigerant and then rendering the
cylinder unusable to prevent future misuse, followed by metal recycling. This ensures compliance
with environmental regulations and safety standards.
Q3 QUESTION 3 OF 65
Reusable refrigerant containers that are normally under pressure above 15 psig, must be
hydrostatically tested and date stamped every:
ANSWER
5 years
RATIONALE
Refrigerant recovery tanks that operate above 15 psig require periodic integrity checks. This
mandated hydrostatic testing ensures the container can safely withstand pressure and prevents
potential leaks or ruptures. The established interval for this critical safety re-evaluation is specified
by regulations.
Page 2
, Q4 QUESTION 4 OF 65
The three R's
ANSWER
Recover, Recycle, Reclaim
RATIONALE
The EPA 608 Core Certification focuses on refrigerant management to protect the ozone layer and
climate. The mandated "three R's" represent the primary strategies for handling refrigerants during
service, maintenance, and disposal. These actions are crucial for minimizing emissions of ozone-
depleting substances and greenhouse gases.
Q5 QUESTION 5 OF 65
Definition of recover?
ANSWER
remove refrigerant in any condition from an appliance and store it in an external container
without necessarily testing or processing it in any way."
RATIONALE
Refrigerant recovery involves extracting the substance from an appliance into a separate, external
storage vessel. This process focuses solely on removal, without requiring immediate analysis or
treatment of the recovered refrigerant. The primary goal is to safely contain it for subsequent
handling.
Q6 QUESTION 6 OF 65
Definition of recycle
ANSWER
—cleaning the recovered refrigerant. —by using oil separation
—should only be used on the same owner's equipment .
Page 3
EPA 608 Core Certification
Exam Questions & Answers
2026/2027 Updated Edition
(Rationales)
Verified Answers Exam Ready With Rationales 65 QUESTIONS
DOCUMENT OVERVIEW
This document provides 65 EPA 608 Core Certification exam questions with provided
correct answers and detailed rationales, including diagrams. It covers fundamental HVAC
refrigerant principles, making it ideal for study, review, and comprehensive certification
preparation.
TOPICS
Refrigerant Handling & Recovery Q1–Q22
System Pressures, Temperatures & Safety Q23–Q35
Refrigerant Fundamentals & Classifications Q36–Q49
Environmental Impact & Regulations Q50–Q53
Refrigeration System Components & Cycle Q54–Q65
E XA M Q U EST I O N S
Q1 QUESTION 1 OF 65
To process refrigerant to a level that is equal to new product specifications as
Page 1
, ANSWER
Reclaiming
RATIONALE
Reclaiming refrigerant involves processing used refrigerant to meet new product specifications,
ensuring purity and quality. This process is distinct from recycling, which only cleans refrigerant for
immediate reuse within the same system. Reclaiming is mandated by EPA regulations for safe and
effective refrigerant management.
Q2 QUESTION 2 OF 65
Recover any remaining refrigerant and then render the cylinder useless, then recycle the
metal is the proper disposal method for;
ANSWER
disposable cylinders
RATIONALE
Disposable refrigerant cylinders are designed for single use and cannot be safely refilled or reused
once emptied. Proper disposal mandates reclaiming any residual refrigerant and then rendering the
cylinder unusable to prevent future misuse, followed by metal recycling. This ensures compliance
with environmental regulations and safety standards.
Q3 QUESTION 3 OF 65
Reusable refrigerant containers that are normally under pressure above 15 psig, must be
hydrostatically tested and date stamped every:
ANSWER
5 years
RATIONALE
Refrigerant recovery tanks that operate above 15 psig require periodic integrity checks. This
mandated hydrostatic testing ensures the container can safely withstand pressure and prevents
potential leaks or ruptures. The established interval for this critical safety re-evaluation is specified
by regulations.
Page 2
, Q4 QUESTION 4 OF 65
The three R's
ANSWER
Recover, Recycle, Reclaim
RATIONALE
The EPA 608 Core Certification focuses on refrigerant management to protect the ozone layer and
climate. The mandated "three R's" represent the primary strategies for handling refrigerants during
service, maintenance, and disposal. These actions are crucial for minimizing emissions of ozone-
depleting substances and greenhouse gases.
Q5 QUESTION 5 OF 65
Definition of recover?
ANSWER
remove refrigerant in any condition from an appliance and store it in an external container
without necessarily testing or processing it in any way."
RATIONALE
Refrigerant recovery involves extracting the substance from an appliance into a separate, external
storage vessel. This process focuses solely on removal, without requiring immediate analysis or
treatment of the recovered refrigerant. The primary goal is to safely contain it for subsequent
handling.
Q6 QUESTION 6 OF 65
Definition of recycle
ANSWER
—cleaning the recovered refrigerant. —by using oil separation
—should only be used on the same owner's equipment .
Page 3
