EPA Certification Exam Complete Questions with Correct Answers Updated 2025/2026||Already Graded!!! 100% Guaranteed Pass

EPA Certification Exam Complete Questions with Correct Answers Updated 2025/2026||Already Graded!!! 100% Guaranteed Pass 1) Which refrigerants have a "0" ODP - ANSWER HFC's 2) Disposable refrigerants cylinders should be disposed of by: - ANSWER Rendering useless and sent to salvage 3) Which refrigerant is a strong candidate for replacing CFC (R-12) in small appliances? - ANSWER R-134a 4) Which refrigerant can be used for leak detection as a trace gas and pressurized with nitrogen? - ANSWER R-22 5) Traces oil around the sight glass inlet fitting of refrigeration system might be the indication of: - ANSWER A leak 6) A condition of excessive superheat at the evaporator outlet and compressor inlet of an air conditioning system could be an indication of: - ANSWER Low on refrigerant charge 7) Type 2 classification, as identified by EPA, applies to what equipment? - ANSWER Split air conditioning equipment with five (5) pounds of refrigerant and greater 8) Front seating the three-way valve suction valve will close the: - ANSWER Valve port to compressor 9) the required level of evacuation for recovery equipment manufactured before November 15, 1993, on a system with an R22 charge of less than 200 pounds is: - ANSWER 0 inches Hg 10) The required level of evacuation for recovery equipment manufactured before November 15 1993, on a system containing less than 200 pounds of R-22 refrigerant is: - ANSWER 0 inches Hg 11) The required level of evacuation for recovery equipment manufactured after November 15, 1993 on a system containing less tan 200 pounds of R-12 refrigerant is: - ANSWER 10 inches Hg 12) Industrial process and commercial refrigeration equipment with an annual leak rate of ___ % requires repairs under EPA regulations: - ANSWER 35% 13) Comfort cooling chillers and all other equipment with an annual leak rate of ___% requires repair under EPA regulations: - ANSWER 15% 14) Recovery time can be shortened by: - ANSWER Recovery as much liquid as possible in he initial liquid line using short hoses cooling the recovery tank in ice water 15) the majority of the liquid to be recovered from a system will be found in the: - ANSWER Receiver (when applied) 16) it becomes the owners responsibility to maintain records of all refrigerant added to unit that contain more thanks ___ pounds of refrigerant charged - ANSWER 50 pounds 17) A major repair is defined by EPA, as replacing the: - ANSWER Compressor or the Evaporator 18) exceptions to the required levels for recovery equipment that require an appliance be evacuated to only 0 psig apply to applications that: - ANSWER Are filled with water or substances that would damage the recovery equipment 19) the generally accepted rule for maximum filling of cylinders is: - ANSWER 80% 20) the refrigeration you would expect to find in a split air conditioning system manufactured before 1995 would be: - ANSWER R-22 21) System dependent recovery equipment is limited o appliances containing less then ____ pounds of refrigerant: - ANSWER 15 pounds 22) the condition and state of refrigerant entering the receiver is: - ANSWER Subcooled high pressure liquid 23) the condition an state of refrigerant leaving the accumulator of a system is: - ANSWER Superheated low pressure vapor 24) deep vacuums used for evacuation and dehydration of systems are measured in: - ANSWER Microns 25) Non-condensibles in an air conditioning or refrigeration system will: - ANSWER Tend to stay in the top of the condenser Increase the high side pressure Be purged with a recovery machine 26) R-134a is a drop on replacement refrigerating for: - ANSWER it is not a drop in replacement 27) One of the easiest ways to identify the type of refrigerant in a system is to: - ANSWER Check the name plate data 28) At room ambient temperature of 80 degrees F, the pressure of a cylinder containing R-22 will be - ANSWER 143 psig 29) Recovery machines using water as the conducing medium would generally use the: - ANSWER Municipal water supply 30) frost would be best removed from a sight glass by: - ANSWER Spraying with alcohol 31) Recovery cylinders are color coded: - ANSWER Gray with yellow tops 32) Which refrigerant is a CFC and has been used with low pressure appliances? - ANSWER R-11 33) Type 3 certification as classified by EPA is for: - ANSWER Low pressure applications 34) The maximum pressure that should be applied to a low pressure chiller leak checking with controlled nitrogen is: - ANSWER 10 psig 35) The short term replacement refrigerant for R-11 chillers is - ANSWER R-123 36) Water tube leaks in a low pressure chiller are usually found with: - ANSWER A hydrostatic tube test 37) The required evacuation level for recovering refrigerant from low pressure appliance with recovery machine manufactured BEFORE November 15, 1993 is: - ANSWER 25 inches Hg 38) The required evacuation level for recovering refrigerant from a low pressure appliance with a recovery machine manufactured AFTER November 15, 1993 is: - ANSWER 25 mm Hg absolute 39) A low pressure chiller generally has the rupture disk set at: - ANSWER 15 psig 40) To prevent freezing of the water coils of a low pressure chiller, it is recommended that: - ANSWER when charging, begin with vapor phase Circulate water through the chiller Do not inject liquid during charging until saturation temperature is above 32 degrees 41) A low pressure chiller providing comfort cooling that has an annual leak rate of ___ % of the total charge, must be repaired: - ANSWER 15% 42) R-134a us classified as a _____ under ASHRAE 34 standard safety group: - ANSWER A1 43) R-123 is classified as a ____ under ASHRAE standard safety group: - ANSWER B-1 44) Under ASHRAE standard 15, what refrigerant requires equipment room seniors? - ANSWER R-123 45) Under ASHRAE standard 15, the following refrigerations require equipment room oxygen deprivation sensors: - ANSWER R-11 R-12 R-134a 46) Low pressure chillers require purge units because: - ANSWER they operate below atmospheric pressure they draw non-condesibles through gaskets and seals