NATE Gas Heating Exam Questions With Correct Answers

NATE Gas Heating Exam Questions With
Correct Answers


Since 1992, the United States Department of Energy has required that
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all furnaces sold and installed from that date on must have an AFUE of
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no less than:
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| A: 70%
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| B: 75%
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| C: 78%
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| D: 80% - CORRECT ANSWER✔✔-C: 78%
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Many pre-1992 furnaces have efficiencies around _______.
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| A: 10%
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| B: 40%
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,| C: 60%
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| D: 80% - CORRECT ANSWER✔✔-C: 60%
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Today, furnaces with AFUE ratings greater than _____ are available.
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| A: 85%
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| B: 90%
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| C: 100%
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| D: 110% - CORRECT ANSWER✔✔-B: 90%
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A thermocouple is used with:
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| A: Intermittent pilot systems
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| B: Direct spark ignition systems
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, | C: Glow coil ignition systems
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D: Standing pilot ignition systems - CORRECT ANSWER✔✔-D: Standing
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pilot ignition systems
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The purpose of the gas pressure regulator is to:
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| A: Keep the color of the flame constant
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| B: Keep the high limit switch from tripping
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| C: Maintain a constant gas pressure at the burner
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D: Allow the gas valve to operate smoothly and accurately - CORRECT
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ANSWER✔✔-C: Maintain a constant gas pressure at the burner
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The instrument used to measure outlet gas pressure is the:
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| A: Velometer
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| B: Anemometer
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