EPA 608 FINAL EXAM QUESTIONS AND
VERIFIED CORRECT ANSWERS
GRADED A+ [LATEST 2026-2027] 100%
GUARANTEED
Moisture combine with refrigerant and oil under high temperatures and pressures to form: -
CORRECT ANSWER-Hydrofluoric & Hydrochloric Acid
A proper Vacuum Should be pulled to: - CORRECT ANSWER-500 Microns
Blending refrigerants should be charged in what state due to fractionation?? - CORRECT
ANSWER-LIQUID
What readings do we use to determine if a system is properly charged?? - CORRECT ANSWER-
Superheat & Subcool
Where should we find information on which refrigerant should be used in a system?? -
CORRECT ANSWER-Unit manufacture DATA PLATE.
Which is the formula for calculating SUPERHEAT?? - CORRECT ANSWER-Suction Line
Temperature - Suction Saturation Temperature
Which is the formula for calculating SUBCOOL?? - CORRECT ANSWER-Liquid Saturation
Temperature - Liquid Line Temperature
, When can a tech find refrigerant saturation temperatures?? - CORRECT ANSWER-By using a
pressure/ temperature chart. The inner rings on MANIFOLD GAUGES:
A fixed orifice (Piston) metering device is charged based on: - CORRECT ANSWER-SUPERHEAT
A expansion valve meter devices are generally charged based on: - CORRECT ANSWER-SUBCOOL
What are the steps to a sealed system repairs?? - CORRECT ANSWER-Recover, Repair, Press,
Test, Vacuum, Charge, Check System, Collect
What are 3 things needed for combustion to occur? - CORRECT ANSWER-Oxygen, Heat, Fuel
Carbon Monoxide is a byproduct of: - CORRECT ANSWER-Incomplete combustion
Carbon Monoxide levels are measured in: - CORRECT ANSWER-Part per million (PPM)
The drip leg (Sediment Trap) functions as a trap for which of the following?? - CORRECT
ANSWER-Dirt, Glue Debris, Moisture
The inducer fan maintains what kind of pressure through the heat exchanger?? - CORRECT
ANSWER-NEGATIVE
A thermocouple (Flame Sensor) is used to: - CORRECT ANSWER-Confirm flame during heat
operation
What is the purpose of a thermal limit (high limit) switch in heating equipment?? - CORRECT
ANSWER-To kill power to the system when unsafe temperatures are reached.
VERIFIED CORRECT ANSWERS
GRADED A+ [LATEST 2026-2027] 100%
GUARANTEED
Moisture combine with refrigerant and oil under high temperatures and pressures to form: -
CORRECT ANSWER-Hydrofluoric & Hydrochloric Acid
A proper Vacuum Should be pulled to: - CORRECT ANSWER-500 Microns
Blending refrigerants should be charged in what state due to fractionation?? - CORRECT
ANSWER-LIQUID
What readings do we use to determine if a system is properly charged?? - CORRECT ANSWER-
Superheat & Subcool
Where should we find information on which refrigerant should be used in a system?? -
CORRECT ANSWER-Unit manufacture DATA PLATE.
Which is the formula for calculating SUPERHEAT?? - CORRECT ANSWER-Suction Line
Temperature - Suction Saturation Temperature
Which is the formula for calculating SUBCOOL?? - CORRECT ANSWER-Liquid Saturation
Temperature - Liquid Line Temperature
, When can a tech find refrigerant saturation temperatures?? - CORRECT ANSWER-By using a
pressure/ temperature chart. The inner rings on MANIFOLD GAUGES:
A fixed orifice (Piston) metering device is charged based on: - CORRECT ANSWER-SUPERHEAT
A expansion valve meter devices are generally charged based on: - CORRECT ANSWER-SUBCOOL
What are the steps to a sealed system repairs?? - CORRECT ANSWER-Recover, Repair, Press,
Test, Vacuum, Charge, Check System, Collect
What are 3 things needed for combustion to occur? - CORRECT ANSWER-Oxygen, Heat, Fuel
Carbon Monoxide is a byproduct of: - CORRECT ANSWER-Incomplete combustion
Carbon Monoxide levels are measured in: - CORRECT ANSWER-Part per million (PPM)
The drip leg (Sediment Trap) functions as a trap for which of the following?? - CORRECT
ANSWER-Dirt, Glue Debris, Moisture
The inducer fan maintains what kind of pressure through the heat exchanger?? - CORRECT
ANSWER-NEGATIVE
A thermocouple (Flame Sensor) is used to: - CORRECT ANSWER-Confirm flame during heat
operation
What is the purpose of a thermal limit (high limit) switch in heating equipment?? - CORRECT
ANSWER-To kill power to the system when unsafe temperatures are reached.
