1|Page
LOW GWP REFRIGERANT EXAM QUESTIONS AND
ANSWERS PRACTICE QUESTIONS WITH SOLUTIONS
NEWEST 2026 2027 | ALREADY GRADED A+
What is the role of the metering device in a refrigeration system?
......ANSWER......To control the flow of refrigerant into the evaporator
What should be done if a refrigerant leak is detected?
......ANSWER......Follow safety protocols to contain and repair the leak
immediately
What is the significance of refrigerant concentration limits?
......ANSWER......To ensure safe handling and prevent hazardous
exposure levels
What are the recommended practices for refrigerant storage?
......ANSWER......Store in a cool, dry place away from heat sources and
in properly labeled containers
What is the purpose of recovery equipment in refrigerant handling?
......ANSWER......To safely reclaim refrigerants from systems for
recycling or disposal
pg. 1
,2|Page
What is the purpose of this guide? ......ANSWER......To aid in the
training of HVACR students and technicians for certification in the safe
handling of modern refrigerants.
What does the term 'flammable refrigerant' include? ......ANSWER......It
includes ASHRAE refrigerant flammability designations of 2, 2L, and 3.
What should technicians discuss with their insurance carrier?
......ANSWER......Liability issues related to working with flammable
refrigerants.
What are the key components for safety in the HVACR industry?
......ANSWER......Education, training, and certification.
What is the significance of the 'note' mentioned in the guide?
......ANSWER......It indicates that a flammable refrigerant may have
additional safety, service, or installation requirements.
Which organization provided information for this guide?
......ANSWER......Various industry organizations, manufacturers,
contractors, authors, and educators.
What is the role of the US Environmental Protection Agency (EPA) in
refrigerant standards? ......ANSWER......They enforce the Clean Air Act
Amendments, particularly Sections 608 and 612.
pg. 2
,3|Page
What does ASHRAE Standard 15 cover? ......ANSWER......It covers safety
standards for refrigerants.
What is the purpose of ANSI/ASHRAE Standard 34? ......ANSWER......It
establishes safety classifications for refrigerants.
What is the minimum ignition energy (MIE)? ......ANSWER......The
minimum energy required to ignite a flammable refrigerant.
What does the refrigerant concentration limit (RCL) refer to?
......ANSWER......The maximum concentration of refrigerant that can be
present in the air before it becomes flammable.
What is the lower flammability limit (LFL)? ......ANSWER......The lowest
concentration of a gas or vapor in air that can ignite.
What is the significance of proper gloves and safety goggles when
handling refrigerants? ......ANSWER......They protect against serious
burns or blindness caused by refrigerants.
What should be done in the event of a large refrigerant leak?
......ANSWER......The area should be vacated and ventilated down to a
safe level before re-entry.
pg. 3
, 4|Page
What are the potential hazards of refrigerants? ......ANSWER......They
can displace oxygen, leading to suffocation or asphyxiation, and some
can be toxic.
What is the purpose of pressure testing requirements?
......ANSWER......To ensure the integrity and safety of refrigerant
systems.
What is involved in refrigerant recovery? ......ANSWER......The process
of safely removing refrigerant from a system for recycling or disposal.
What are the ANSI/ASHRAE Standard 15.2 requirements?
......ANSWER......They provide additional safety requirements for the
use of flammable refrigerants.
What does UL Standard 60335-2-40 cover? ......ANSWER......It addresses
safety requirements for refrigeration appliances.
What is the role of the Air Conditioning Heating and Refrigeration
Institute (AHRI)? ......ANSWER......They provide guidelines and
standards for HVACR equipment.
What is the importance of local codes and manufacturer's literature?
......ANSWER......They may differ from general guidelines and should be
followed for compliance.
pg. 4
LOW GWP REFRIGERANT EXAM QUESTIONS AND
ANSWERS PRACTICE QUESTIONS WITH SOLUTIONS
NEWEST 2026 2027 | ALREADY GRADED A+
What is the role of the metering device in a refrigeration system?
......ANSWER......To control the flow of refrigerant into the evaporator
What should be done if a refrigerant leak is detected?
......ANSWER......Follow safety protocols to contain and repair the leak
immediately
What is the significance of refrigerant concentration limits?
......ANSWER......To ensure safe handling and prevent hazardous
exposure levels
What are the recommended practices for refrigerant storage?
......ANSWER......Store in a cool, dry place away from heat sources and
in properly labeled containers
What is the purpose of recovery equipment in refrigerant handling?
......ANSWER......To safely reclaim refrigerants from systems for
recycling or disposal
pg. 1
,2|Page
What is the purpose of this guide? ......ANSWER......To aid in the
training of HVACR students and technicians for certification in the safe
handling of modern refrigerants.
What does the term 'flammable refrigerant' include? ......ANSWER......It
includes ASHRAE refrigerant flammability designations of 2, 2L, and 3.
What should technicians discuss with their insurance carrier?
......ANSWER......Liability issues related to working with flammable
refrigerants.
What are the key components for safety in the HVACR industry?
......ANSWER......Education, training, and certification.
What is the significance of the 'note' mentioned in the guide?
......ANSWER......It indicates that a flammable refrigerant may have
additional safety, service, or installation requirements.
Which organization provided information for this guide?
......ANSWER......Various industry organizations, manufacturers,
contractors, authors, and educators.
What is the role of the US Environmental Protection Agency (EPA) in
refrigerant standards? ......ANSWER......They enforce the Clean Air Act
Amendments, particularly Sections 608 and 612.
pg. 2
,3|Page
What does ASHRAE Standard 15 cover? ......ANSWER......It covers safety
standards for refrigerants.
What is the purpose of ANSI/ASHRAE Standard 34? ......ANSWER......It
establishes safety classifications for refrigerants.
What is the minimum ignition energy (MIE)? ......ANSWER......The
minimum energy required to ignite a flammable refrigerant.
What does the refrigerant concentration limit (RCL) refer to?
......ANSWER......The maximum concentration of refrigerant that can be
present in the air before it becomes flammable.
What is the lower flammability limit (LFL)? ......ANSWER......The lowest
concentration of a gas or vapor in air that can ignite.
What is the significance of proper gloves and safety goggles when
handling refrigerants? ......ANSWER......They protect against serious
burns or blindness caused by refrigerants.
What should be done in the event of a large refrigerant leak?
......ANSWER......The area should be vacated and ventilated down to a
safe level before re-entry.
pg. 3
, 4|Page
What are the potential hazards of refrigerants? ......ANSWER......They
can displace oxygen, leading to suffocation or asphyxiation, and some
can be toxic.
What is the purpose of pressure testing requirements?
......ANSWER......To ensure the integrity and safety of refrigerant
systems.
What is involved in refrigerant recovery? ......ANSWER......The process
of safely removing refrigerant from a system for recycling or disposal.
What are the ANSI/ASHRAE Standard 15.2 requirements?
......ANSWER......They provide additional safety requirements for the
use of flammable refrigerants.
What does UL Standard 60335-2-40 cover? ......ANSWER......It addresses
safety requirements for refrigeration appliances.
What is the role of the Air Conditioning Heating and Refrigeration
Institute (AHRI)? ......ANSWER......They provide guidelines and
standards for HVACR equipment.
What is the importance of local codes and manufacturer's literature?
......ANSWER......They may differ from general guidelines and should be
followed for compliance.
pg. 4
