What type of refrigerants - Study guides, Class notes & Summaries
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HVAC: EPA 608 CERTIFICATION EXAM 2024 WITH 100% CORRECT ANSWERS
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Are there drop-in replacements for R-12 systems? Why or why not?Answer - No because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. 
 
What type of oil is used in R-134a and what oils will it mix with?Answer - Ester based oils and they do not mix with other oils 
 
What type of lubricant is used with HCFCs?Answer - Alkylbenzene lubricant 
 
What is difference b/w ternary blend a azeotropic blend?Answer - Ternary blends are three-part mixtures whereas ...
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UPDATED EPA 608 Test Prep | 150 Questions with 100% Correct Answers | Verified | Latest Update 2024
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the state of the refrigerant entering the metering device is? - A subcooled high pressure liquid. 
what type of refrigerant is used in VERY high-pressure appliances? - R-503 
what type of refrigerant is used in MEDIUM pressure appliances? - R-500 
what type of refrigerant is used in HIGH pressure appliances? - R-410A and R-22 
what device is located at the END of the liquid line? - The expansion device. 
what type of refrigerants are the LEAST harmful to the ozone layer? - HFC refrigerants. 
How...
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EPA 608 Certification, EPA 608 actual exam 2024 with 100% correct answers(download to pass)
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November 14, 1994 
What date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? 
 
 
 
Memorize it, ya'll. 
1987- 
Montreal Protocol 
 
July 1 1992- 
Violation to vent CFCs or HCFCs 
 
Nov 15 1993- 
Recovery/Recycling equipment must be certified and labeled by EPA 
AND 
Before this date recovery equipment needed to be capable of removing 80% of the refrigerant, w or wo compressor, or 4 in Hg 
After this date recovery equipment needs to be capable of re...
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EPA 608 CORE with 100% correct answers 2024 latest update
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Dont disolve iin water 
What characteristic or characteristics of CFCs make them more likely than other chlorine compounds to reach the stratosphere? 
 
 
 
100,000 ozone molecules 
Each chlorine atom in the stratosphere can destroy how many ozone molecules? 
 
 
 
Theyre all CFC's 
Which refrigerant contains a CFC? 
R500, R12, R113 or R11? 
 
 
 
Hydrogen, chlorine, flourine and carbon 
HYDROCHLORIC FLORICCARBON (HCFC) refrigerant contain? 
 
 
 
HFC R 134A 
Which refrigerant is a chlorine fre...
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EPA TYPE 2 Questions and Answers | Latest Version | 2024/2025 | Rated A+
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EPA TYPE 2 Questions and Answers | 
Latest Version | 2024/2025 | Rated A+ 
 
What is the focus of EPA Type 2 certification? 
 EPA Type 2 certification focuses on the proper handling of medium-pressure refrigerants 
used in commercial and residential air conditioning and refrigeration systems. 
 
Which types of refrigerants are commonly associated with Type 2 certification? 
 Common refrigerants include R-22 (chlorodifluoromethane) and R-407C (a blend of R-32, 
R-125, and R-134a), which are used ...
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HVAC: EPA 608 Certification Study Guide | 100% Correct Answers | Verified | Latest 2024 Version
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Are there drop-in replacements for R-12 systems? Why or why not? - No because the new 
refrigerants are incompatible with the oils and lubricants used in R-12 systems. 
What type of oil is used in R-134a and what oils will it mix with? - Ester based oils and they do not 
mix with other oils 
What type of lubricant is used with HCFCs? - Alkylbenzene lubricant 
What is difference b/w ternary blend a azeotropic blend? - Ternary blends are three-part mixtures 
whereas azeotropic blends are blends of...
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EPA SECTION 608 CORE (2019 revision) Questions and Answers Latest Version 100% Solved
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EPA SECTION 608 CORE (2019 revision) 
Questions and Answers Latest Version 
100% Solved 
What does ozone in the stratosphere above the earth consist of? 
a. Molecules containing 2 oxygen atoms. 
b. Molecules containing 3 oxygen atoms. 
c. Molecules containing 4 oxygen atoms. 
d. Molecules containing 5 oxygen atoms ️️b. Molecules containing 3 oxygen atoms. 
Which of the following refrigerants has the lowest global warming potential? 
a. R-134a 
b. R-407C 
c. R-410A 
d. R-600a ️️d. R-600a...
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HVAC: EPA 608 Certification Study Guide with 100% Complete Solutions
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HVAC: EPA 608 Certification Study 
Guide with 100% Complete Solutions 
Are there drop-in replacements for R-12 systems? Why or why not? - Correct Answer ️️ 
-No because the new refrigerants are incompatible with the oils and lubricants used 
in R-12 systems. 
What type of oil is used in R-134a and what oils will it mix with? - Correct Answer ️️ - 
Ester based oils and they do not mix with other oils 
What type of lubricant is used with HCFCs? - Correct Answer ️️ -Alkylbenzene 
lubric...
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EPA Tim Exam Study Questions and Answers Graded A 2024
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Removing refrigerant in any condition from a system and storing it in an external container without necessarily testing or processing it in any way defines 
 
A) Recycling 
B) Recovering 
C) Reclaiming 
D) Restoring - B) Recovering 
 
One should NEVER heat a refrigerant storage or recovery tank with an open flame because: 
 
A) it can result in venting refrigerant to the atmosphere 
B) the tank may explode, causing serious injury to people nearby 
C) refrigerant in the tank may decompose, f...
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EPA 608 CORE EXAM TESTS COMBINED | VERIFIED TEST QUESTIONS WITH CORRECT SOLUTIONS
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EPA 608 CORE EXAM TESTS 
COMBINED | VERIFIED TEST 
QUESTIONS WITH CORRECT 
SOLUTIONS 
Where is the stratosphere? - ANSWER 10 to 30 miles 
Where is ozone located? - ANSWER stratosphere 
What does ozone in the stratosphere above the earth consist of? 
a. Molecules containing 2 oxygen atoms 
b. Molecules containing 3 oxygen atoms 
c. Molecules containing 4 oxygen atoms 
d. Molecules containing 5 oxygen atoms - ANSWER b. Molecules 
containing 3 oxygen atoms 
Which of the following refrigerants ha...
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