NATE Gas Heating Exam Questions 2024/2025 | Consisting Of 50 Questions With Verified Answers From Experts
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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%✔✔78%
2. Many pre-1992
furnaces have efficiencies around .
A: 10%
B: 40%
C: 60%
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D: 80%✔✔60%
3. Today, furnaces
with AFUE ratings greater than are available.
A: 85%
B: 90%
C: 100%
D: 110%✔✔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✔✔Standing pilot ignition systems
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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
C: Maintain a constant gas pressure at the burner
D: Allow the gas valve to operate smoothly and accurately✔✔Maintain
a constant gas pressure at the burner
6. The instrument used to measure outlet gas pressure is
the✔✔Velometer
B: Anemometer
C: Monometer
D: Draft gauge✔✔Monometer
7. he 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"✔✔3.5"
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