HVACR ACTUAL PAPER 2026 VERIFIED
SOLUTIONS GRADED A+
◉ When must the installer must be certain to plumb the cabinet so
its sides are vertical?
Answer: When changing out an evaporator coil.
◉ What is the recommended maximum external static pressure
used for heating and cooling equipment with blowers for 5 ton of
cooling or less?
Answer: 0.1 in W.C
◉ When a balancing check of a newly installed duct what needs to
happen?
Answer: Dampers should be open completely in all rooms.
◉ Why is operating sound is a consideration in the location of a
condensing unit?
Answer: Because excessive noise could be disruptive to the customer
◉ A technician has determined a supply in a flexible duct system is
leaking. What should be checked?
Answer: All connections inner and outer layers.
,◉ What is sensible heat ratio?
Answer: sensible removed ÷ total heat removed
◉ Service site conditions are:
• House feels "drafty" in cooling
• 3½ ton split system
• High supply face velocities
• Ductwork is properly sized
• Total CFM 1400
What does this indicate?
Answer: These readings indicate the system is operating normally
but the supply registers are too restrictive
◉ When a wet bulb reading is very close to the dry bulb reading
from the same instrument, what does this indicate?
, Answer: Relative humidity is high.
◉ What measurements would be needed to properly evaluate a
complaint of "drafty" operation with a heating system?
Answer: System TD, Drop, and Static Pressure
◉ What kind of energy does the condenser remove from the
refrigerant?
Answer: Sensible heat and Latent heat
◉ Where does refrigerant boil?
Answer: In the Evaporator.
◉ What is the common suction line on a heat pump connected to?
Answer: The indoor coil and the compressor.
◉ What are the two generally used methods for changing capacity
on demand in a heat pump?
Answer: Two speed compressor. Two stage thermostat
◉ What are the three things that happen when a heat pump is cycled
into the defrost mode?
SOLUTIONS GRADED A+
◉ When must the installer must be certain to plumb the cabinet so
its sides are vertical?
Answer: When changing out an evaporator coil.
◉ What is the recommended maximum external static pressure
used for heating and cooling equipment with blowers for 5 ton of
cooling or less?
Answer: 0.1 in W.C
◉ When a balancing check of a newly installed duct what needs to
happen?
Answer: Dampers should be open completely in all rooms.
◉ Why is operating sound is a consideration in the location of a
condensing unit?
Answer: Because excessive noise could be disruptive to the customer
◉ A technician has determined a supply in a flexible duct system is
leaking. What should be checked?
Answer: All connections inner and outer layers.
,◉ What is sensible heat ratio?
Answer: sensible removed ÷ total heat removed
◉ Service site conditions are:
• House feels "drafty" in cooling
• 3½ ton split system
• High supply face velocities
• Ductwork is properly sized
• Total CFM 1400
What does this indicate?
Answer: These readings indicate the system is operating normally
but the supply registers are too restrictive
◉ When a wet bulb reading is very close to the dry bulb reading
from the same instrument, what does this indicate?
, Answer: Relative humidity is high.
◉ What measurements would be needed to properly evaluate a
complaint of "drafty" operation with a heating system?
Answer: System TD, Drop, and Static Pressure
◉ What kind of energy does the condenser remove from the
refrigerant?
Answer: Sensible heat and Latent heat
◉ Where does refrigerant boil?
Answer: In the Evaporator.
◉ What is the common suction line on a heat pump connected to?
Answer: The indoor coil and the compressor.
◉ What are the two generally used methods for changing capacity
on demand in a heat pump?
Answer: Two speed compressor. Two stage thermostat
◉ What are the three things that happen when a heat pump is cycled
into the defrost mode?
