Question 1: All recycling refrigerant machines are ..............................
- system dependent recycling equipment
- Self contained recycling equipment
EPA 608
NEC 2023
EPA 608 Core Exam Practice Test 3
Free Online EPA 608 Practice Test ( Core Exam)-3
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epa 608 practice tests
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Frequently Asked Questions
Yes — completely free with no account needed.
The EPA 608 certification is required by law for any technician who purchases or handles refrigerants. It covers safe handling, leak detection, recovery, and environmental regulations.
Type I covers small appliances (≤5 lbs refrigerant), Type II covers high-pressure systems, Type III covers low-pressure systems, and Universal covers all three. Most HVAC technicians pursue Universal certification.
You must score at least 70% on each section of the exam. The Universal exam has four parts: core, Type I, Type II, and Type III.
14
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21 min
Time
70%
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Student Reviews 5.0 / 5 · 2 reviews
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Kira Vasquez
I needed the 608 for a new HVAC position and had maybe three weeks to study. Between the core and Type I/II tests on this site I felt well prepared. Suprisingly good explanations for a free resource.
K
Kira Vasquez
I needed the 608 for a new HVAC position and had maybe three weeks to study. Between the core and Type I/II tests on this site I felt well prepared. Suprisingly good explanations for a free resource.
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EPA 608 Core Exam Practice Test 3 — Question List
Question 2: which of the following is the leading replacement option for retrofitting R- 12 refrigeration systems?
- R-134a
- R-22
- R 234
- R 44
Question 3: prior to disposal the pressure refrigerant disposal container should be ____________
- Zero psig
- Zero psia
- Zero bars
- Zero kpa
Question 4: At what period the reusable cylinders should be hydrostatically treated for strength check?
- Five years
- Four years
- Three years
- Six years
Question 5: What is the color code for central port of manifold gauge?
- Red
- Blue
- Yellow
- White
Question 6: which of the following is the most effective method for small leaks?
- halide torch
- pulling vacuum on system
- charging with dry nitrogen
- pumping high pressure
Question 7: After recovering refrigerant from a system which may be used to flush debris out of system?
- Nitrogen
- CO<sub>2</sub>
- O<sub>2</sub>
- helium
Question 8: What does CFC stands for?
- Chlorofluorocarbon
- Chlorofluorochlorine
- carbonfluorochlorine
Question 9: ................ refrigerant has high ozone depletion potential.
- HCFC
- CFC
- HFC
Question 10: Which of the refrigerant does not contain HCFC?
- R-134
- R-22
- R-123
- R-11
Question 11: What is the water saturation limit of POE ester oil?
- 25 ppm
- 2500 ppm
- 6,500 ppm
- 10,000 ppm
Question 12: Refrigerant blends that are composed of two different refrigerants are called as ..................
- binary blends
- ternary blends
- multi blends
Question 13: If the pressure of liquid increases the boiling port of liquid ...................
- decreases
- increases
- Remains same
Question 14: In a pressure gauge a micron is ................ of milli meter
- 1/10 th
- 1/100 th
- 1/1000 th
- 1/10000th
I needed the 608 for a new HVAC position and had maybe three weeks to study. Between the core and Type I/II tests on this site I felt well prepared. Suprisingly good explanations for a free resource.
I needed the 608 for a new HVAC position and had maybe three weeks to study. Between the core and Type I/II tests on this site I felt well prepared. Suprisingly good explanations for a free resource.