- Study guides, Class notes & Summaries

Heat which causes a change in temperature of a substance is called; -sensible heat. Heat which causes a change in state of a material without a change in temperature is called; - latent heat. Heat which is added to a vapor after the change of state occurs is called; -superheat.

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12 pages

Written in 2023/2024

Grade A+

erastus311

What is the movement of heat through space called? : Radiation A refrigerant release heat when : It condenses Why is it desirable for refrigerant in the suction line to be slightly superheated? : To insure liquid refrigerant does not enter the compressor A 30 pound cylinder of reclaimed R-22 refrigerant has been stored over night at 70 degrees F. What should be the approximate pressure in the cylinder? : 121 psig 2 14.7 psia( pouds per square inch absolute) is : Approximately 0 PSIG ...

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17 pages

Written in 2023/2024

Grade A+

Axpert

Tdlr – Environmental Air Conditioning Technician Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationale 2027 Q&A| Instant Download Pdf– Questions And Answers | Verified And Well Detailed Answers | Plus Rationales | Guaranteed Pass | Latest Exam Update

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103 pages

Written in 2026/2027

Grade A+

nursenancy1

Air Conditioning Chapter 4 - Principles of Heat Transfer 2026/2027

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10 pages

Written in 2026/2027

Grade A+

gabrielucky

Achieve absolute diagnostic superiority and regulatory compliance with the ultimate S-Tier Georgia Refrigeration Technician & Conditioned Air Contractor Mastery Protocol. Engineered for serious professionals and elite students, this premium resource moves beyond basic memorization. It trains your professional intuition using real-world thermodynamic simulations, strict legal boundaries, and cutting-edge environmental codes. What is inside this S-Tier Document? The "Critical Axioms" ...

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21 pages

Written in 2026/2027

Grade A+

Kigz

Macs Section 9 Exam Complete Package Deal

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2 items

PROFFKERRYMARTIN

Prepare for the MACS Section 609 Air Conditioning Certification Exam with this comprehensive 2026 exam preparation guide featuring 100+ expertly compiled practice questions and verified answers covering the essential knowledge required for EPA Section 609 certification. This study resource provides in-depth coverage of mobile vehicle air conditioning (MVAC) systems, refrigerant recovery and recycling procedures, HFC-134a and HFO-1234yf refrigerants, EPA Clean Air Act regulations, refrigerant ide...

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4 pages

Written in 2025/2026

Grade A+

PROFFKERRYMARTIN

Prepare for the EPA 608 Certification exam with this comprehensive study guide based on EPA Section 608 regulations. Master essential topics including the four certification types, recovery requirements, evacuation levels, leak repair thresholds, and refrigerant safety. Includes detailed exam sections and test-taking strategies to help you pass the proctored exam on your first attempt.

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8 pages

Written in 2025/2026

Grade A+

topwritershelp2021

Classical Conditioning And Operant Conditioning Complete Test With Correct Answers

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5 pages

Written in 2025/2026

Grade A+

LeeErickson

This comprehensive and in-depth Air Conditioning study guide is specifically designed for students, HVAC technicians, and professionals seeking to master the principles and practical skills of air conditioning systems, providing a complete and detailed review of HVAC fundamentals including the refrigeration cycle, thermodynamics, and heat transfer, while also covering system components such as compressors, condensers, evaporators, and expansion devices, as well as installation, maintenance, and ...

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70 pages

Written in 2025/2026

Grade A+

ruthmuthoni

This HVAC210 Air Conditioning Systems study guide is fully updated for 2026 and designed to provide a structured, exam-focused preparation resource for HVAC students and technicians. It includes over 350 verified practice questions with accurate answers and detailed rationales, covering essential topics such as refrigeration cycle principles, air conditioning system components, thermodynamics and heat transfer, and installation and maintenance procedures. The guide also emphasizes troubleshootin...

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34 pages

Written in 2025/2026

Grade A+

BrightVarsity

Classical And Operant Conditioning Latest Version 2025/2026

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10 pages

Written in 2025/2026

Grade A+

LeeErickson

OVERVIEW DESCRIPTION: The 640-LA Second Class Stationary Air Conditioning exam is a critical licensing step for commercial HVAC contractors in Louisiana, mandated by the LSLBC for projects valued at $10,000 or more. Administered as an open-book test through PSI with a four-hour time limit, it requires a 70% passing score. The exam thoroughly assesses a candidate's competency across the full spectrum of the trade, including HVAC and refrigeration systems, air distribution, piping, ...

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95 pages

Written in 2025/2026

Grade A+

VerifiedSets

Pass your state or industry Air Conditioning Certification (e.g., EPA 608, NATE) exam with this comprehensive 2025 study guide. This resource covers core principles of refrigeration, system components, electrical circuits, charging and recovery procedures, diagnostics, and EPA regulations for handling refrigerants. It includes system diagrams, troubleshooting charts, practice exam questions, and study notes to ensure you are fully prepared to score 100% and work legally and safely on AC systems.

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9 pages

Written in 2025/2026

Grade A+

ThePlug

Air Conditioning Final Exam Questions And Answers Graded A+

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21 pages

Written in 2025/2026

Grade A+

LiamJones

Bundled Exams::: Air Conditioning Exams Actual 2026 Update

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3 items

mercylynneh

AIR CONDITIONING/ PRESSURIZATION/ VENTILATION ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS Conditioned air is distributed to: A: Cockpit, cargo bays and cabin B: Cockpit, fwd and aft cabins C: Cockpit, avionics bay and cabin D: Cockpit, cabin and holds 1 and 2 only - Answer -B: Cockpit, fwd and aft cabins Hot air fault light illuminates on the air conditioning panel, A: The hot air press. reg. valve opens and the trim air valves close. B: The hot air press. reg. valve closes a...

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46 pages

Written in 2025/2026

Grade A+

mercylynneh

RADON REVIEW QUIZ 6 (MITIGATION) ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS A measurement of the differential pressure across a slab is carried out by a mitigator on a day characterized by gusts of wind. In comparison to measurements made on a calm day, the windy day pressure differential readings across the slab will: Select one: a. Remain constant b. Increase

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23 pages

Written in 2025/2026

Grade A+

mercylynneh

HYDRONIC HEATING AND COOLING ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS What is the definition of human comfort relative to temperature? A. When you feel slightly warm. B. When your drink feels cool in your beach chair. C. When you feel slightly cool. D. When you feel neither warm nor cool - Answer -When you feel neither warm nor cool Which type of hydronic system

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72 pages

Written in 2025/2026

Grade A+

mercylynneh

AIR CONDITIONING/ PRESSURIZATION/ VENTILATION ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS Conditioned air is distributed to: A: Cockpit, cargo bays and cabin B: Cockpit, fwd and aft cabins C: Cockpit, avionics bay and cabin D: Cockpit, cabin and holds 1 and 2 only - Answer -B: Cockpit, fwd and aft cabins Hot air fault light illuminates on the air conditioning panel, A: The hot air press. reg. valve opens and the trim air valves close. B: The hot air press. reg. valve closes a...

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46 pages

Written in 2025/2026

Grade A+

AdelineJean

HYDRONIC HEATING AND COOLING ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS What is the definition of human comfort relative to temperature? A. When you feel slightly warm. B. When your drink feels cool in your beach chair. C. When you feel slightly cool. D. When you feel neither warm nor cool - Answer -When you feel neithe

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72 pages

Written in 2025/2026

Grade A+

AdelineJean

Air Conditioning B Practice Exam 1 | Questions And Answers 2025/2026 With Complete Solution.

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24 pages

Written in 2025/2026

Grade A+

EvaTee