EPA SECTION 608 CERTIFICATION STUDY
GUIDE ESCO 2026 COMPREHENSIVE
PRACTICE QUESTIONS AND CORRECT
ANSWERS WITH DETAILED RATIONALES
CORE, TYPE I, TYPE II, TYPE III AND
UNIVERSAL HVAC CERTIFICATION EXAM
PREPARATION
What conditions allow for a system to be open and repaired without
recovering the refrigerant to require vacuum level? - CORRECT ANSWER -A
system with a large leak and internal pressure of 0 psig
Non-condensables will cause; - CORRECT ANSWER -High discharge
pressure The chlorine in CFCs and HCFCs; - CORRECT ANSWER -will not
dissolve in water
What is the Significant New Alternatives policy (SNAP) program -
CORRECT ANSWER -EPA program that identifies refrigerant with lower
overall risks to human health and environment
To process refrigerant to a level to new ( virgin ) product specifications has
determined by chemical analysis defines - CORRECT ANSWER -Reclaiming
, Before shipping any use refrigerant cylinders, check that the cylinder meets
what standards: - CORRECT ANSWER -Department of transportation
One Ozone molecule Contains? - CORRECT ANSWER -three oxygen atoms
Reusable refrigerant containers under high-pressure must be
hydrostatically tested how often? - CORRECT ANSWER -5 years
Silicone elastomers, for use in seals and gaskets, are not compatible with
which refrigerant - CORRECT ANSWER -HFO's
The condenser - CORRECT ANSWER -changes a high-pressure vapor to a
high-pressure liquid.
A refrigerant cylinder designed to hold recovered refrigerant has a: -
CORRECT ANSWER -A gray body and yellow top
HFCs (hydrofluorocarbons) - CORRECT ANSWER -Well, not damage
stratospheric ozone, but have high GWP
The compressor - CORRECT ANSWER -Changes a low-pressure vapor to a
high-pressure vapor
Which ASHRAE classification means slightly flammable? - CORRECT
ANSWER -A2L
GUIDE ESCO 2026 COMPREHENSIVE
PRACTICE QUESTIONS AND CORRECT
ANSWERS WITH DETAILED RATIONALES
CORE, TYPE I, TYPE II, TYPE III AND
UNIVERSAL HVAC CERTIFICATION EXAM
PREPARATION
What conditions allow for a system to be open and repaired without
recovering the refrigerant to require vacuum level? - CORRECT ANSWER -A
system with a large leak and internal pressure of 0 psig
Non-condensables will cause; - CORRECT ANSWER -High discharge
pressure The chlorine in CFCs and HCFCs; - CORRECT ANSWER -will not
dissolve in water
What is the Significant New Alternatives policy (SNAP) program -
CORRECT ANSWER -EPA program that identifies refrigerant with lower
overall risks to human health and environment
To process refrigerant to a level to new ( virgin ) product specifications has
determined by chemical analysis defines - CORRECT ANSWER -Reclaiming
, Before shipping any use refrigerant cylinders, check that the cylinder meets
what standards: - CORRECT ANSWER -Department of transportation
One Ozone molecule Contains? - CORRECT ANSWER -three oxygen atoms
Reusable refrigerant containers under high-pressure must be
hydrostatically tested how often? - CORRECT ANSWER -5 years
Silicone elastomers, for use in seals and gaskets, are not compatible with
which refrigerant - CORRECT ANSWER -HFO's
The condenser - CORRECT ANSWER -changes a high-pressure vapor to a
high-pressure liquid.
A refrigerant cylinder designed to hold recovered refrigerant has a: -
CORRECT ANSWER -A gray body and yellow top
HFCs (hydrofluorocarbons) - CORRECT ANSWER -Well, not damage
stratospheric ozone, but have high GWP
The compressor - CORRECT ANSWER -Changes a low-pressure vapor to a
high-pressure vapor
Which ASHRAE classification means slightly flammable? - CORRECT
ANSWER -A2L
