TX GENERAL PUMP INSTALLER EXAMINATION
TEST 2026 FULL QUESTIONS AND CORRECT
ANSWERS
◉ Closed-Loop System. Answer: Recirculates water in buried pipes
◉ Desuperheating. Answer: Heats domestic water from compressor
gas
◉ Bi-Flow Thermostatic Expansion Valve. Answer: Eliminates need
for check valves or metering devices
◉ Geothermal Heat Pump. Answer: Uses ground for heating and
cooling
◉ Open-Loop Geothermal System Location. Answer: Connected to a
well
◉ Water Heating Loop Temperature. Answer: Not above 145°F
◉ Minerals in Pond/Lake Water. Answer: Cause scale buildup in
systems
, ◉ Coaxial Coil Flow. Answer: Water and refrigerant flow in opposite
directions
◉ Geothermal Heat Source. Answer: Mainly from the ground
◉ Closed-Loop System Advantage. Answer: Efficient heat transfer in
small-diameter piping
◉ Secondary Refrigerant Requirement. Answer: Closed-loop water-
source systems
◉ Geothermal System Capacity. Answer: Stable due to heat
extraction from the ground
◉ Heat Pump Defrost Type. Answer: No defrosting needed
◉ Compression Ratio Impact on Heating Capacity. Answer:
Decreases as outdoor temperature drops
◉ Electric Resistance Strip Heat. Answer: Common auxiliary heat in
heat pumps
TEST 2026 FULL QUESTIONS AND CORRECT
ANSWERS
◉ Closed-Loop System. Answer: Recirculates water in buried pipes
◉ Desuperheating. Answer: Heats domestic water from compressor
gas
◉ Bi-Flow Thermostatic Expansion Valve. Answer: Eliminates need
for check valves or metering devices
◉ Geothermal Heat Pump. Answer: Uses ground for heating and
cooling
◉ Open-Loop Geothermal System Location. Answer: Connected to a
well
◉ Water Heating Loop Temperature. Answer: Not above 145°F
◉ Minerals in Pond/Lake Water. Answer: Cause scale buildup in
systems
, ◉ Coaxial Coil Flow. Answer: Water and refrigerant flow in opposite
directions
◉ Geothermal Heat Source. Answer: Mainly from the ground
◉ Closed-Loop System Advantage. Answer: Efficient heat transfer in
small-diameter piping
◉ Secondary Refrigerant Requirement. Answer: Closed-loop water-
source systems
◉ Geothermal System Capacity. Answer: Stable due to heat
extraction from the ground
◉ Heat Pump Defrost Type. Answer: No defrosting needed
◉ Compression Ratio Impact on Heating Capacity. Answer:
Decreases as outdoor temperature drops
◉ Electric Resistance Strip Heat. Answer: Common auxiliary heat in
heat pumps
