HVAC & Electrical Theory Tests

Electrical theory and HVAC electrical systems for technicians and apprentices.

18 tests · 180 questions · Free · No signup · NEC 2023

These HVAC electrical theory tests cover the fundamentals that every HVAC/R technician needs: Ohm's Law, series and parallel circuits, transformers, single-phase and three-phase motors, control wiring, and electrical troubleshooting.

Designed for apprentices, HVAC students, and technicians preparing for NATE certification or state licensing exams with an electrical component. Questions use realistic HVAC scenarios — sizing a transformer for a furnace, reading a ladder diagram, calculating current draw on a condenser unit.

Ohm's Law & Power Series & Parallel Circuits Transformers Single-Phase Motors Three-Phase Systems Control & Ladder Wiring
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Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Heat Pump Practice Test 1

Advanced

Take a Free Practice Test on HVAC Heat Pump -1

10 Q · 15 min · 70% pass
Start Test
Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Heat Pump Practice Test 2

Beginner

Take a Free Practice Test on HVAC Heat Pump -2

10 Q · 15 min · 70% pass
Start Test
Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Heat Pump Practice Test 3

Beginner

Take a Free Practice Test on HVAC Heat Pump -3

10 Q · 15 min · 70% pass
Start Test
Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Heat Pump Practice Test 4

Intermediate

Take a Free Practice Test on HVAC Heat Pump -4

10 Q · 15 min · 70% pass
Start Test
Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Heat Pump Practice Test 5

Intermediate

Take a Free Practice Test on HVAC Heat Pump -5

10 Q · 15 min · 70% pass
Start Test
Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Air Conditioning Practice Test 1

Intermediate

Take a Free Practice Test on HVAC Air Conditioning -1

10 Q · 15 min · 70% pass
Start Test
Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Air Conditioning Practice Test 2

Intermediate

Take a Free Practice Test on HVAC Air Conditioning - 2

10 Q · 15 min · 70% pass
Start Test
Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Air Conditioning Practice Test 3

Advanced

Take a Free Practice Test on HVAC Air Conditioning -3

10 Q · 15 min · 70% pass
Start Test
Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Air Conditioning Practice Test 4

Beginner

Take a Free Practice Test on HVAC Air Conditioning - 4

10 Q · 15 min · 70% pass
Start Test
Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Controls Practice Questions(sensor)-1

Beginner

Take a Free Practice Test on HVAC Controls Sensor - 1

10 Q · 15 min · 70% pass
Start Test
Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Controls Practice Questions(sensor)-2

Intermediate

Take a Free Practice Test on HVAC Controls Practice Questions (sensor) - 2

10 Q · 15 min · 70% pass
Start Test
Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Controls Practice Questions(sensor)-3

Intermediate

Take a Free Practice Test on HVAC Controls Practice Questions(sensor)-3

10 Q · 15 min · 70% pass
Start Test
Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Controls Practice Questions(sensor)-4

Intermediate

Take a Free Practice Test on HVAC Controls Practice Questions(sensor)-4

10 Q · 15 min · 70% pass
Start Test
Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Controls Practice Questions(sensor)-5

Intermediate

Take a Free Practice Test on HVAC Controls Practice Questions(sensor)-5

10 Q · 15 min · 70% pass
Start Test
Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Basic Electrical Questions -1

Advanced

Take a Free Practice Test on HVAC Basic Electrical Questions -1

10 Q · 15 min · 70% pass
Start Test
Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Basic Electrical Questions -2

Beginner

Take a Free Practice Test on HVAC Basic Electrical Questions -2

10 Q · 15 min · 70% pass
Start Test
Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Basic Electrical Questions -3

Beginner

Take a Free Practice Test on HVAC Basic Electrical Questions -3

10 Q · 15 min · 70% pass
Start Test
Wiring Methods Branch Circuits Motors
NEC 2023

HVAC Basic Electrical Questions -4

Intermediate

Take a Free Practice Test on HVAC Basic Electrical Questions -4

10 Q · 15 min · 70% pass
Start Test