ESCO AIR CONDITIONING EXAM HIGH-YIELD
AIR CONDITIONING INSTALLATION,
TROUBLESHOOTING, AND SAFETY SUMMARY
2026
◉ Why must refrigerant in the suction line be slightly warmer than
the saturation temperature?
Answer: Prevent liquid slugging of the compressor
◉ The state of the refrigerant in the suction line should be.
Answer: Low pressure / Low temperature vapor
◉ The state of the refrigerant entering the condenser is.
Answer: High pressure / Highly superheated vapor
◉ The evaporator.
Answer: Transfers heat from the refrigerated space to the
refrigerant
◉ Which of the following is not a thermodynamic property of
refrigerants.
Answer: Flammability
, ◉ The sequential order of steps in the vapor compressions process
are.
Answer: Compression, Condensation, Expansion, Vaporization
◉ If a 30 pound cylinder of reclaimed R 410 a refrigerant has been
stored overnight at 70° the pressure in the cylinder should be
approximately.
Answer: 201 psig
◉ Fan airflow pressures are usually measured in.
Answer: Inches of water column
◉ 0 pounds per square inch absolute is.
Answer: A pressure which cannot be further reduced
◉ 0 pounds per square inch gauge is.
Answer: The same as atmospheric pressure
◉ The temperature at which moisture will start to condense from
the air is called.
Answer: Dew point temperature
AIR CONDITIONING INSTALLATION,
TROUBLESHOOTING, AND SAFETY SUMMARY
2026
◉ Why must refrigerant in the suction line be slightly warmer than
the saturation temperature?
Answer: Prevent liquid slugging of the compressor
◉ The state of the refrigerant in the suction line should be.
Answer: Low pressure / Low temperature vapor
◉ The state of the refrigerant entering the condenser is.
Answer: High pressure / Highly superheated vapor
◉ The evaporator.
Answer: Transfers heat from the refrigerated space to the
refrigerant
◉ Which of the following is not a thermodynamic property of
refrigerants.
Answer: Flammability
, ◉ The sequential order of steps in the vapor compressions process
are.
Answer: Compression, Condensation, Expansion, Vaporization
◉ If a 30 pound cylinder of reclaimed R 410 a refrigerant has been
stored overnight at 70° the pressure in the cylinder should be
approximately.
Answer: 201 psig
◉ Fan airflow pressures are usually measured in.
Answer: Inches of water column
◉ 0 pounds per square inch absolute is.
Answer: A pressure which cannot be further reduced
◉ 0 pounds per square inch gauge is.
Answer: The same as atmospheric pressure
◉ The temperature at which moisture will start to condense from
the air is called.
Answer: Dew point temperature
