ESCO HEAT PUMP COMPREHENSIVE EXAM
2026 QUESTIONS AND SOLUTIONS GRADED
A+
◉2. What is the difference between "demand defrost" and "timed
defrost?" Answer: D: demand defrost only happens when needed, and
time defrost is on timed temperature
◉3. The thermostat that controls the auxiliary electric heat according to
the outdoor temperature is called the; Answer: C: outdoor ambient
thermostat.
◉4. The outdoor temperature at which the heat pump provides the same
amount of heat as the heat loss of the conditioned space without
auxiliary heat is known as the; Answer: A: initial balance point.
◉5. At what temperature is an outdoor ambient thermostat normally set?
Answer: B: At or slightly above the initial balance point.
◉6. The outdoor coil is frozen solid on a "no heat" service call. The
most likely reason is: Answer: D: outdoor fan is inoperative
, ◉7. In order to determine a heat pumps' balance point, you must first
calculate; Answer: A: the building's heat load.
◉8. Heat pumps are sized to handle the; Answer: A: cooling load.
◉9. a high efficiency heat pump system designed to function from high
or low ambient conditions below 10F may have; Answer: C: auxiliary
heat exchanger injected with a ethylene glycol solution.
◉10. Room thermostats for heat pumps should be installed; Answer: B:
as near to the main return air grill as possible.
◉11. When the heat pump compressor has malfunetioned, the cus tomer
has the option to switch the system into; Answer: B: emergency heat
mode.
◉12. Start-up with a night set back digital thermostat requires the
technician to always; Answer: D: teach the customer to program the
thermostat.
◉13. The heat pump defrost board can be manipulated by the technician
to; Answer: C: simulate the defrost cycle.
◉14. The air-to-air heat pump outdoor unit is most efficient if located;
Answer: C: in a moderate climate zone.
2026 QUESTIONS AND SOLUTIONS GRADED
A+
◉2. What is the difference between "demand defrost" and "timed
defrost?" Answer: D: demand defrost only happens when needed, and
time defrost is on timed temperature
◉3. The thermostat that controls the auxiliary electric heat according to
the outdoor temperature is called the; Answer: C: outdoor ambient
thermostat.
◉4. The outdoor temperature at which the heat pump provides the same
amount of heat as the heat loss of the conditioned space without
auxiliary heat is known as the; Answer: A: initial balance point.
◉5. At what temperature is an outdoor ambient thermostat normally set?
Answer: B: At or slightly above the initial balance point.
◉6. The outdoor coil is frozen solid on a "no heat" service call. The
most likely reason is: Answer: D: outdoor fan is inoperative
, ◉7. In order to determine a heat pumps' balance point, you must first
calculate; Answer: A: the building's heat load.
◉8. Heat pumps are sized to handle the; Answer: A: cooling load.
◉9. a high efficiency heat pump system designed to function from high
or low ambient conditions below 10F may have; Answer: C: auxiliary
heat exchanger injected with a ethylene glycol solution.
◉10. Room thermostats for heat pumps should be installed; Answer: B:
as near to the main return air grill as possible.
◉11. When the heat pump compressor has malfunetioned, the cus tomer
has the option to switch the system into; Answer: B: emergency heat
mode.
◉12. Start-up with a night set back digital thermostat requires the
technician to always; Answer: D: teach the customer to program the
thermostat.
◉13. The heat pump defrost board can be manipulated by the technician
to; Answer: C: simulate the defrost cycle.
◉14. The air-to-air heat pump outdoor unit is most efficient if located;
Answer: C: in a moderate climate zone.
