ARIZONA HVAC CONTRACTOR EXAM 2026/2027
EXAM REAL QUESTIONS WITH WELL
ELABORATED ANSWERS (100% CORRECT
VERIFIED SOLUTIONS) LATEST UPDATED
VERSION GUARANTEED PASS A+
1. The primary function of an HVAC system is to:
a) Control temperature, humidity, and air quality
b) Provide only cooling
c) Provide only heating
d) Decorate the building
Answer: a
Rationale: HVAC systems regulate indoor comfort and air quality.
2. Sensible heat refers to:
a) Heat that changes air temperature
b) Heat that changes moisture content
c) Latent moisture only
d) Decorative heat
Answer: a
Rationale: Sensible heat affects temperature without changing moisture.
3. Latent heat is associated with:
a) Moisture content change
b) Temperature only
c) Air velocity
d) Duct size
Answer: a
Rationale: Latent heat involves phase change of moisture.
4. BTU stands for:
a) British Thermal Unit
b) Basic Temperature Unit
, c) Building Thermal Utility
d) Balanced Thermal Usage
Answer: a
Rationale: BTU measures heat energy.
5. A ton of cooling equals:
a) 12,000 BTUs per hour
b) 10,000 BTUs per hour
c) 8,000 BTUs per hour
d) 24,000 BTUs per hour
Answer: a
Rationale: Standard HVAC cooling measurement.
6. The evaporator coil:
a) Absorbs heat from indoor air
b) Releases heat outdoors
c) Compresses refrigerant
d) Meters refrigerant flow
Answer: a
Rationale: Evaporator absorbs indoor heat.
7. The condenser coil:
a) Releases heat to outdoor air
b) Absorbs indoor heat
c) Compresses refrigerant
d) Measures airflow
Answer: a
Rationale: Condenser rejects heat outside.
8. The compressor’s function is to:
a) Increase refrigerant pressure and temperature
b) Cool air
c) Remove humidity
d) Control airflow
, Answer: a
Rationale: Compression raises pressure for heat rejection.
9. Refrigerant metering devices include:
a) TXVs and capillary tubes
b) Compressors
c) Blowers
d) Filters
Answer: a
Rationale: Metering devices regulate refrigerant flow.
10. Superheat measures:
a) Temperature above refrigerant boiling point
b) Air humidity
c) Static pressure
d) Electrical load
Answer: a
Rationale: Indicates proper refrigerant evaporation.
11. Subcooling measures:
a) Temperature below refrigerant condensing point
b) Air temperature
c) Moisture removal
d) Heat gain
Answer: a
Rationale: Confirms liquid refrigerant condition.
12. The purpose of an air filter is to:
a) Remove particulates from air
b) Increase humidity
c) Control refrigerant
d) Measure pressure
Answer: a
Rationale: Filters improve air quality and protect equipment.
EXAM REAL QUESTIONS WITH WELL
ELABORATED ANSWERS (100% CORRECT
VERIFIED SOLUTIONS) LATEST UPDATED
VERSION GUARANTEED PASS A+
1. The primary function of an HVAC system is to:
a) Control temperature, humidity, and air quality
b) Provide only cooling
c) Provide only heating
d) Decorate the building
Answer: a
Rationale: HVAC systems regulate indoor comfort and air quality.
2. Sensible heat refers to:
a) Heat that changes air temperature
b) Heat that changes moisture content
c) Latent moisture only
d) Decorative heat
Answer: a
Rationale: Sensible heat affects temperature without changing moisture.
3. Latent heat is associated with:
a) Moisture content change
b) Temperature only
c) Air velocity
d) Duct size
Answer: a
Rationale: Latent heat involves phase change of moisture.
4. BTU stands for:
a) British Thermal Unit
b) Basic Temperature Unit
, c) Building Thermal Utility
d) Balanced Thermal Usage
Answer: a
Rationale: BTU measures heat energy.
5. A ton of cooling equals:
a) 12,000 BTUs per hour
b) 10,000 BTUs per hour
c) 8,000 BTUs per hour
d) 24,000 BTUs per hour
Answer: a
Rationale: Standard HVAC cooling measurement.
6. The evaporator coil:
a) Absorbs heat from indoor air
b) Releases heat outdoors
c) Compresses refrigerant
d) Meters refrigerant flow
Answer: a
Rationale: Evaporator absorbs indoor heat.
7. The condenser coil:
a) Releases heat to outdoor air
b) Absorbs indoor heat
c) Compresses refrigerant
d) Measures airflow
Answer: a
Rationale: Condenser rejects heat outside.
8. The compressor’s function is to:
a) Increase refrigerant pressure and temperature
b) Cool air
c) Remove humidity
d) Control airflow
, Answer: a
Rationale: Compression raises pressure for heat rejection.
9. Refrigerant metering devices include:
a) TXVs and capillary tubes
b) Compressors
c) Blowers
d) Filters
Answer: a
Rationale: Metering devices regulate refrigerant flow.
10. Superheat measures:
a) Temperature above refrigerant boiling point
b) Air humidity
c) Static pressure
d) Electrical load
Answer: a
Rationale: Indicates proper refrigerant evaporation.
11. Subcooling measures:
a) Temperature below refrigerant condensing point
b) Air temperature
c) Moisture removal
d) Heat gain
Answer: a
Rationale: Confirms liquid refrigerant condition.
12. The purpose of an air filter is to:
a) Remove particulates from air
b) Increase humidity
c) Control refrigerant
d) Measure pressure
Answer: a
Rationale: Filters improve air quality and protect equipment.
