Refrigerant - Study guides, Class notes & Summaries
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BOMA – HVAC QUESTIONS AND ANSWERS 100% PASS LATEST UPDATE 2024
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BOMA – HVAC QUESTIONS AND ANSWERS 100% PASS LATEST UPDATE 2024 
 
Two basic categories of chillers are the ___. 
a. Compression cycle and absorption 
b. purge and absorption 
c. absorption and lithium bromide 
d. purge and lithium bromide - 
Correct Answer a. Compression cycle and absorption 
 
The five requirements for comfort are proper temperature, humidity, filtration, _____, and ventilation. 
 
a. circulation 
b. velocity 
c. . 
d. none of the above - 
Correct Answer a. circulation 
 
T...
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EPA 608 universal With correct Answers
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EPA 608 universal with correct Answers 
Refrigeration technicians who violate the Clean Air Act can: - 
After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - Refrigerant that is recovered can be returned to: 
 
Refrigerant can not be called "reclaimed" unless it: - . 
The EPA can require a technician to demonstrate their ability to perform proper procedures for recovering and/or recycling refrigerant. Failure to demonstrate competency can re...
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ASD Exam Questions With 100% Correct Answers 2023
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ASD Exam Questions With 100% Correct Answers 2023 
Category 1 - Correct Answer-Category of Water that originates from sanitary water source (Clean) 
 
Catetroy 2 - Correct Answer-Category of Water that is contaminated; may cause discomfort or sickness (Grey) 
 
Category 3 - Correct Answer-Category of Water that is grossly contaminated; includes toxins, pathogens 
 
Special Situation - Correct Answer-Regulated or hazardous materials 
 
Class 1 - Correct Answer-Class of water that has least amount...
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NATE Heat Pump Exam questions with correct answers
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Charging a heat pump with refrigerant is best accomplished in the _______ mode. 
 
 A: Heating mode 
 
 B: Cooling mode 
 
 C: Defrost mode 
 
 D: Emergency heating mode CORRECT ANSWER B: Cooling mode 
 
Heat pumps can provide both heating in the winter and cooling in the summer. In which mode is the heat pump more efficient? 
 
 A: Heating mode 
 
 B: Cooling mode 
 
 C: Defrost mode 
 
 D: Emergency heating mode CORRECT ANSWER A: Heating mode 
 
Which of the following components is exclusive t...
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NATE CORE-Exam 2023 Questions and Answers
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NATE CORE-Exam 2023 Questions and Answers 
 
 
When explaining to a customer that you have topped off the system charge, which of the following terms is most appropriate? - ANSWER-Refrigerant
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BOMA – HVAC QUESTIONS AND ANSWERS 100% PASS
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BOMA – HVAC QUESTIONS AND 
 
ANSWERS 100% PASS 
 
Two basic categories of chillers are the 
compression cycle and absorption 
The five requirements for comfort are proper temperature, humidity, filtration, and ventilation 
circulation 
The primary function of an expansion device is to 
produce a reduction in the pressure on the liquid refrigerant, regulate the flow of refrigerant into 
the evaporator, lower the boiling point of the refrigerant far enough below the temperature of the 
load to g...
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HVAC: EPA 608 Certification Study Guide Questions and Answers | Latest Version | 2024/2025 | Rated A+
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HVAC: EPA 608 Certification Study 
Guide Questions and Answers | Latest 
Version | 2024/2025 | Rated A+ 
 
Are there alternative refrigerants that can be directly used in systems originally designed for R- 
12? Why or why not? 
 
No, because these new refrigerants are not compatible with the lubricants and oils used in R- 
12 systems. 
 
Explanation: The oils and lubricants in R-12 systems cannot properly interact with newer 
refrigerants, making direct replacements unfeasible. 
 
What type of o...
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MACS 609 CERTIFICATION questions with correct answers
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If lubricant is removed by recovery equipment during system refrigerant removal, what must be done with the lubricant? - Answer Re-install lubricant removed by the recovery equipment 
 
Before reuse, what must be done with HFC-134a that has been recovered from a mobile A/C system using recovery-only equipment? - Answer Question 2 options: 
Recycle the HFC-134a before reuse using certified equipment
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HVAC (EPA Certification Exam Section 608) Questions With Verified Solutions | ALREADY PASSED | LATEST REVISED UPDATE
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HVAC (EPA Certification Exam 
Section 608) Questions With 
Verified Solutions | ALREADY 
PASSED | LATEST REVISED 
UPDATE 
What does a metering device do? - ANSWER The metering 
device causes a reduction in pressure, and therefore a reduction 
in saturation temperature. 
What is absorbed in the evaporator? - ANSWER Heat is 
absorbed in the evaporator. 
What happens in the evaporator? - ANSWER Heat is absorbed 
in the evaporator and causes the refrigerant to boil from liquid to 
vapor. 
At...
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HVAC NATE Heat Pump |171 questions| with correct answers
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On an R-22 system, line diameters and lengths are typically specified for a vapor pressure drop that does not exceed what? CORRECT ANSWER 6-7PSI or 6F 
 
What is the primary purpose of using flux when soldering copper or brass parts? CORRECT ANSWER Prevent Oxidation 
 
The water that results from a defrost cycle of an air to air heat pump(runoff) must? CORRECT ANSWER Drain off and away from the outdoor coil. 
 
Why must the runoff be drained off and away from the outdoor coil? CORRECT ANSWER Exc...
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