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NATE AC SERVICE CERTIFICATION EXAM SCRIPT 2026 COMPLETE QUESTIONS AND ANSWERS 100% CORRECT

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NATE AC SERVICE CERTIFICATION EXAM SCRIPT 2026 COMPLETE QUESTIONS AND ANSWERS 100% CORRECT

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NATE AC SERVICE CERTIFICATION EXAM
SCRIPT 2026 COMPLETE QUESTIONS AND
ANSWERS 100% CORRECT

●● Return air leakage in a hot attic will:


A. Increase capacity
B. Decrease capacity
C. Increase airflow
D. Decrease airflow.
Answer: B. Decrease capacity


●● Which of the following substances could create an extremely
dangerous condition if used to check refrigeration system for leaks?


A. R-22
B. Nitrogen
C. Oxygen
D. Carbon Dioxide.
Answer: D. Carbon Dioxide

, ●● On a 3 ton unit installation, the measure airflow equals 1550 CFM.
What does this indicate?


A. Proper balancing
B. Low Airflow
C. Excess airflow
D. Improper balancing.
Answer: C. Excess airflow(400cfm per ton, 3 ton=1200cfm)


●● What will refrigerant oil in a hose cause when a technician is
checking the pressures in an operation system with a manifold gauge
set?


A. All readings on that gauge will increase in value.
B. All readings on that gauge will decrease in value.
C. All readings on that gauge will not be affected.
D. The gauge will read 0 psig..
Answer: C. All readings on that gauge will not be affected.


●● Which of the following is a likely problem if the air across the
evaporator of an air conditioner has a high temperature differential?


A. Too much charge

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