NATE Gas Heating Exam Latest 2026 Actual Questions & Verified Answers (Latest 2026 / 2027 Update) A+ Grade 100% Guarantee Verified by Experts.

NATE Gas Heating Exam Questions and
Answers

1.Since 1992, the United States Department of Energy has
required that all furnaces sold and installed from that date on
must have an AFUE of no less than:

A: 70%

B: 75%

C: 78%

D: 80%
ANS: C: 78%



2.Many pre-1992 furnaces have efficiencies around .

A: 10%

B: 40%

C: 60%

D: 80%
ANS: C: 60%


1/
26

,3.Today, furnaces with AFUE ratings greater than are
available.

A: 85%

B: 90%

C: 100%

D: 110%
ANS: B: 90%



4.A thermocouple is used with:

A: Intermittent pilot systems

B: Direct spark ignition
systems C: Glow coil
ignition systems
D: Standing pilot ignition systems
ANS: D: Standing pilot ignition systems


5.The purpose of the gas pressure regulator is to:

A: Keep the color of the flame constant

B: Keep the high limit switch from tripping
2/
26

, C: Maintain a constant gas pressure at the burner

D: Allow the gas valve to operate smoothly and accurately
ANS: C: Maintain a constant gas pressure at the burner



6.The instrument used to measure outlet gas pressure is the:

A: Velometer

B:
Anemometer
C:
Monometer
D: Draft gauge
ANS: C: Monometer


7.The regulator on a natural gas furnace should be adjusted to
supply
inches of pressure at the burners.

A: 11"

B: 10"

C: 3.5"

D: 2"

3/
26