EPA CORE EXAM 2025 WITH 75 QUESTIONS AND ANSWERS

EPA CORE EXAM 2025 WITH 75 QUESTIONS AND
ANSWERS


When servicing an R-22 system you CANNOT - ANSWER top off the unit with R-407C
ks ks ks k s ks ks k s ks ks ks ks ks ks k s




Reclaimed refrigerant must be tested to meet ks ks ks ks ks ks ks before it can be ks ks ks




resold. - ANSWER AHRI 700
ks ks ks ks ks




EPA may require technicians to demonstrate their ability to perform proper procedures for
ks ks ks ks ks ks ks ks ks ks ks ks




recovering and/or recycling refrigerant. Failure to demonstrate or failure to properly use the
ks ks ks ks ks ks ks ks ks ks ks ks ks




equipment may result in: - ANSWER Revocation of the technician's certification
ks ks ks ks ks ks ks ks ks ks ks




You have to leak check a unit which has lost a complete charge. Which gas(es) would cause
ks ks ks ks ks ks ks ks ks ks ks ks ks ks ks ks




the LEAST damage to the environment? - ANSWER Dry nitrogen
ks ks ks ks ks ks ks ks ks ks




refrigerant has an ODP that is greater than 1. - ANSWER R- ks ks ks ks ks ks ks ks ks ks ks




22

Which of the following is a lawful use of HCFC-22? - ANSWER Servicing existing R-22
ks ks ks ks ks ks ks ks ks ks ks ks ks ks




systems
ks




has the lowest ODP. - ANSWER R-410A ks ks k s k s ks ks




The EPA's "safe disposal requirements" make the
ks responsibleforks ks ks ks ks ks ks




ensuring that all refrigerant has been removed from household refrigerators before they are
ks ks ks ks ks ks ks ks ks ks ks ks ks




disposed. - ANSWER final person in the disposal chain
ks ks ks ks ks ks ks ks ks




If technicians lose their certification card, they must
ks ks ks ks ks ks ks .-ANSWER
ks ks




request a replacement from the company that provided the certification
ks ks ks ks ks ks ks ks ks ks




Which refrigerant(s) must be recovered before opening or disposing of appliances? -
ks ks ks ks ks ks ks ks ks ks ks




ANSWER All Refrigerants must be recovered before opening or disposing of appliances?
ks ks ks ks ks ks ks ks ks ks ks ks




Ozone depletion is caused by ks ks ks ks ks in HCFC refrigerants. - ANSWER
ks ks ks ks




chlorine
ks




State and local governments ks ks ks ks . - ANSWER can make laws that are
ks ks ks ks ks ks ks




stricter requirements than the federal regulations
ks ks ks ks ks ks




Which appliances are NOT covered by EPA regulations? - ANSWER Desiccant
ks ks ks ks ks ks ks ks ks ks




dehumidifiers
ks




After a refrigerant is phased-out, supplies of that refrigerant for equipment servicing can
ks ks ks ks ks ks ks ks ks ks ks ks

, only come from ks ks ks . - ANSWER recovered and reclaimed gas
k s ks ks ks ks ks




Ozone contains how many atoms of oxygen? - ANSWER molecules containing 3 oxygen atoms
ks ks ks ks ks ks ks ks ks ks ks ks ks




The ks program identifies alternative refrigerants for use. - ANSWER SNAP ks ks k s ks ks ks ks ks




A refrigerant cylinder that has a gray body and a yellow top indicates the cylinder is
ks ks ks ks ks ks ks ks ks ks ks ks ks ks ks




designed to hold: - ANSWER Recovered refrigerant
ks ks ks ks ks ks ks




HCFC refrigerants are made up of? - ANSWER Hydrogen, chlorine, fluorine, and carbon
ks ks ks ks ks k s ks ks ks ks ks ks




How should refrigerant cylinders be positioned when they are shipped? - ANSWER
ks ks ks ks ks ks ks ks ks ks ks




Upright
ks




Which of the following proves that HCFCs are in the stratosphere? - ANSWER HCFCs found
ks ks ks ks ks ks ks ks ks ks ks ks ks ks




in air samples from the stratosphere.
ks ks ks ks ks ks




A "self-contained" recovery device
ks ks ks ks . - ANSWERremoves refrigerant
ks ks ks ks




with the assistance of components in the appliance
ks ks ks ks ks ks ks ks




Which type of refrigerant typically has the lowest global warming potential? - ANSWER HFOs
ks ks ks ks ks ks ks ks ks ks ks ks ks




What action violates the EPA's prohibition on venting? - ANSWER Opening the system without
ks ks ks ks ks ks ks ks ks ks ks ks ks




properly recovering the refrigerant first
ks ks ks ks ks




Before disposing of any appliance containing refrigerant - ANSWER recover the
ks ks ks ks ks ks ks ks ks ks




refrigerant
ks




Recovery during low ambient temperatures will: - ANSWER Slow the recovery time
ks ks ks ks ks k s ks ks ks ks ks




What gas is used as the baseline measurement for GWP? - ANSWER Carbon dioxide
ks ks ks ks ks k s ks ks ks k s ks ks ks