ESCO HVAC CERTIFICATION REVIEW
2026 QUESTIONS WITH SOLUTIONS
TESTED QUESTIONS.
⩥ Dehydration and recovery. Answer: Refrigeration system evacuation
is a combination of which two processes ?
⩥ evaporation. Answer: The removal of moisture from a system , or
dehydration , is done through a process called ;
⩥ 500 microns. Answer: The industry standard target for evacuation is ;
⩥ quality of the oil in the vacuum pump. Answer: The quality of the
vacuum being pulled is directly related to the ;
⩥ 760,000 microns. Answer: A micron is a very small unit of
measurement , used in the HVACR industry to measure a deep vacuum .
Atmospheric pressure ( 0 psig ) is equal to approximately ;
⩥ 0 psig. Answer: Prior to beginning an evacuation , the pressure inside
of the system that is being evacuated should be reduced to ;
, ⩥ 100 microns. Answer: When performing a decay test after an
evacuation , the system pressure should not rise more than ;
⩥ cut it out of the system .. Answer: The recommended way to remove a
clogged filter drier from a refrigeration system's piping is to
⩥ Bi - flow drier. Answer: Heat pump systems require which type of
liquid - line drier ?
⩥ compressor burnout. Answer: Suction line driers should be used on
systems that require cleanout after ,
⩥ Placing the recovery tank in ice water .. Answer: Which of the
following will lower the pressure inside of a recovery tank and speed up
the recovery process ?
⩥ 0 psig. Answer: For most residential and light commercial heat pump
and air conditioning systems containing less than 200 pounds of either R
- 22 or R - 410A , the required recovery level is commercial is
⩥ a desiccant. Answer: The component of the core of a filter drier that is
responsible for removing moisture is composed of
2026 QUESTIONS WITH SOLUTIONS
TESTED QUESTIONS.
⩥ Dehydration and recovery. Answer: Refrigeration system evacuation
is a combination of which two processes ?
⩥ evaporation. Answer: The removal of moisture from a system , or
dehydration , is done through a process called ;
⩥ 500 microns. Answer: The industry standard target for evacuation is ;
⩥ quality of the oil in the vacuum pump. Answer: The quality of the
vacuum being pulled is directly related to the ;
⩥ 760,000 microns. Answer: A micron is a very small unit of
measurement , used in the HVACR industry to measure a deep vacuum .
Atmospheric pressure ( 0 psig ) is equal to approximately ;
⩥ 0 psig. Answer: Prior to beginning an evacuation , the pressure inside
of the system that is being evacuated should be reduced to ;
, ⩥ 100 microns. Answer: When performing a decay test after an
evacuation , the system pressure should not rise more than ;
⩥ cut it out of the system .. Answer: The recommended way to remove a
clogged filter drier from a refrigeration system's piping is to
⩥ Bi - flow drier. Answer: Heat pump systems require which type of
liquid - line drier ?
⩥ compressor burnout. Answer: Suction line driers should be used on
systems that require cleanout after ,
⩥ Placing the recovery tank in ice water .. Answer: Which of the
following will lower the pressure inside of a recovery tank and speed up
the recovery process ?
⩥ 0 psig. Answer: For most residential and light commercial heat pump
and air conditioning systems containing less than 200 pounds of either R
- 22 or R - 410A , the required recovery level is commercial is
⩥ a desiccant. Answer: The component of the core of a filter drier that is
responsible for removing moisture is composed of
