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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 lubricant What is difference b/w ternary blend a azeotropic blend? correct answer: Ternary blends ...

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22 pages

Written in 2022/2023

Grade A+

Classroom

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 blend...

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13 pages

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Grade A+

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Master the EPA 608 Core Exam with this comprehensive package deal featuring multiple versions of practice tests with 100% correct answers and complete solutions for 2026/2027. This A+ Graded resource contains all core practice test versions in one complete bundle covering all core section domains including Section 608 regulations, ozone depletion s

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Pass the HVAC EPA 608 Certification Exam with this comprehensive 2026/2027 updated guide featuring 100% correct answers and complete solutions. This A+ Graded resource covers all key certification domains including Core (Section 608 regulations, ozone depletion, refrigerant handling), Type I (small appliances, recovery techniques), Type II (high-pressure appliances, leak repair requirements), and Type III (low-pressure appliances, recovery and evacuation). Each answer includes thorough rationale...

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36 pages

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HVAC: EPA 608 Certification Exam With 100% Correct Solutions 2025/2026 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 azeo...

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11 pages

Written in 2025/2026

Grade A+

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HVAC: EPA 608 Certification Study Guide 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 lubricant What is difference b/w ternary blend a azeotro...

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11 pages

Written in 2024/2025

Grade A+

VERIFIEDPASS

HVAC: EPA 608 CERTIFICATION STUDY GUIDE QUESTIONS NEWEST 2025 ACTUAL EXAM 100 QUESTIONS AND CORRECT DETAILED ANSWERS / ALREADY GRADED A+, 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 inEster based oils and they do not mix with other oils R-134a and what oils will it mix with? What type of lubricant is used with HCFCs? Alkylbenzene lubricant What is d...

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13 pages

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6 pages

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HVAC: EPA 608 Certification Study Guide Questions and Answers | Latest Version | 2024/2025 | Rated A+

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11 pages

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HVAC: EPA 608 CERTIFICATION EXAM 2024 WITH 100% CORRECT ANSWERS 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 lubricant What is difference b...

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11 pages

Written in 2023/2024

Grade A+

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9 pages

Written in 2023/2024

Grade A+

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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 lubricant What is difference b/w ternary blend a azeotropic blend? - correct answer Ternary blends ...

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11 pages

Written in 2023/2024

Grade A+

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HVAC Exam Bundle (Graded A+) 2024

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ACADEMICMATERIALS

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 aze...

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10 pages

Written in 2023/2024

Grade A+

ACADEMICMATERIALS

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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11 pages

Written in 2023/2024

Grade A+

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HVAC: EPA 608 Certification Study Guide with verified solutions | Latest 2024/2025

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11 pages

Written in 2023/2024

Grade A+

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HVAC: EPA 608 Certification Study Guide | 100 Questions & Answers Latest Update2024 Assured Success.HVAC: EPA 608 Certification Study Guide | 100 Questions & Answers Latest Update2024 Assured Success.HVAC: EPA 608 Certification Study Guide | 100 Questions & Answers Latest Update2024 Assured Success.

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13 pages

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Grade A+

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