MD HVAC MASTERS EXAM SCRIPT 2026 FULL
EVALUATION VERIFIED A+
◉ When may reclaimed refrigerant be reused in a different owner's
equipment? Answer: Meets purity requirements of ARI 700
◉ A high-pressure boiler shall have a shutoff valve in ____________.
Answer: The supply and return lines only
◉ Duct insulation may cover a service opening when it is not ID.
True or False? Answer: False
◉ Which of the following gauges must be equipped on hot water
heating boilers? Answer: Pressure
◉ A liquid is considered flammable if it has a flash point below
_______ degrees and has a vapor pressure nit exceeding 50 psia.
Answer: 100
◉ With no air movement in a room ____________ can possibly occur?
Answer: Stratification
, ◉ In a chilled water system, a connection between different metallic
piping materials must be made with ____________. Answer: Dielectric
fittings
◉ A controlled device responsive to relative humidity of the
atmosphere is a ___________. Answer: Humidi stat
◉ Type of instrument used to measure electrical resistance?
Answer: Ohmmeter
◉ An insulation that has absorbed moisture ___________. Answer: Has
lost some of its insulation value
◉ The amount of makeup air is what in relation to the exhaust air in
a kitchen exhaust system? Answer: Make up air should be equal to
exhaust air
◉ Which of the following materials can be used on oil piping on
residential installation? Answer: Flexible connector
◉ A ___________ is used to reduce noise caused by compressor
pressure pulses. Answer: Muffler
EVALUATION VERIFIED A+
◉ When may reclaimed refrigerant be reused in a different owner's
equipment? Answer: Meets purity requirements of ARI 700
◉ A high-pressure boiler shall have a shutoff valve in ____________.
Answer: The supply and return lines only
◉ Duct insulation may cover a service opening when it is not ID.
True or False? Answer: False
◉ Which of the following gauges must be equipped on hot water
heating boilers? Answer: Pressure
◉ A liquid is considered flammable if it has a flash point below
_______ degrees and has a vapor pressure nit exceeding 50 psia.
Answer: 100
◉ With no air movement in a room ____________ can possibly occur?
Answer: Stratification
, ◉ In a chilled water system, a connection between different metallic
piping materials must be made with ____________. Answer: Dielectric
fittings
◉ A controlled device responsive to relative humidity of the
atmosphere is a ___________. Answer: Humidi stat
◉ Type of instrument used to measure electrical resistance?
Answer: Ohmmeter
◉ An insulation that has absorbed moisture ___________. Answer: Has
lost some of its insulation value
◉ The amount of makeup air is what in relation to the exhaust air in
a kitchen exhaust system? Answer: Make up air should be equal to
exhaust air
◉ Which of the following materials can be used on oil piping on
residential installation? Answer: Flexible connector
◉ A ___________ is used to reduce noise caused by compressor
pressure pulses. Answer: Muffler
