NATE Gas Heating Exam || Most Recent Exam
2026-2027 Actual Complete Real Exam Questions
And Correct Answers (Verified Answers) Already
Graded A+ | Guaranteed Success!! Newest Exam
| Just Released!!
Residential gas furnaces use blowers powered by which types
of motors?
A: Poly-phase, two phase, single phase and capacitor start
B: Shaded pole, split-phase, capacitor start and PSC
C: Three phase, shaded pole and PSC
D: Split-phase, induction start-induction run and variable speed
DC - ANSWER
-D: Split-phase, induction start-induction run and
variable speed DC
Secondary air is air that:
A: Is mixed with the fuel before the fuel reaches the burner
,B: Is mixed with the fuel at the burner after the fuel has ignited
C: Remains unused after the combustion process is complete
D: Enters the draft diverter and goes up the stack with the
products of combustion - ANSWER -B: Is mixed with the fuel at
the burner after the fuel has ignited
The three major furnace configurations are:
A: Up-flow, down-flow and lowboy
B: Up-flow, down-flow and horizontal
C: Up-flow, down-flow and cross-flow
D: None of these is correct - ANSWER -B: Up-flow, down-flow
and horizontal
Latent heat is:
A: Heat that causes a change in temperature with no change in
state
B: Heat that causes a change in state with no change in
temperature
, C: The large amount of heat involved when a gas condenses
into a liquid
D: Both b and c are correct - ANSWER -D: Both b and c are
correct
A mid-efficiency or high-efficiency furnace will not operate if:
A: It is not grounded or the polarity is reversed
B: The indoor blower motor capacitor is wired into the wrong
motor winding C: The air filter is installed backwards
D: The door switch is shorted closed - ANSWER -A: It is not
grounded or the
polarity is
reversed
Furnaces are placed into categories based upon:
A: Venting characteristics
B: Btuh capacity range
C: Gas valve type
D: Total airflow in CFM - ANSWER -A: Venting characteristics
Condensing furnaces:
2026-2027 Actual Complete Real Exam Questions
And Correct Answers (Verified Answers) Already
Graded A+ | Guaranteed Success!! Newest Exam
| Just Released!!
Residential gas furnaces use blowers powered by which types
of motors?
A: Poly-phase, two phase, single phase and capacitor start
B: Shaded pole, split-phase, capacitor start and PSC
C: Three phase, shaded pole and PSC
D: Split-phase, induction start-induction run and variable speed
DC - ANSWER
-D: Split-phase, induction start-induction run and
variable speed DC
Secondary air is air that:
A: Is mixed with the fuel before the fuel reaches the burner
,B: Is mixed with the fuel at the burner after the fuel has ignited
C: Remains unused after the combustion process is complete
D: Enters the draft diverter and goes up the stack with the
products of combustion - ANSWER -B: Is mixed with the fuel at
the burner after the fuel has ignited
The three major furnace configurations are:
A: Up-flow, down-flow and lowboy
B: Up-flow, down-flow and horizontal
C: Up-flow, down-flow and cross-flow
D: None of these is correct - ANSWER -B: Up-flow, down-flow
and horizontal
Latent heat is:
A: Heat that causes a change in temperature with no change in
state
B: Heat that causes a change in state with no change in
temperature
, C: The large amount of heat involved when a gas condenses
into a liquid
D: Both b and c are correct - ANSWER -D: Both b and c are
correct
A mid-efficiency or high-efficiency furnace will not operate if:
A: It is not grounded or the polarity is reversed
B: The indoor blower motor capacitor is wired into the wrong
motor winding C: The air filter is installed backwards
D: The door switch is shorted closed - ANSWER -A: It is not
grounded or the
polarity is
reversed
Furnaces are placed into categories based upon:
A: Venting characteristics
B: Btuh capacity range
C: Gas valve type
D: Total airflow in CFM - ANSWER -A: Venting characteristics
Condensing furnaces:
