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NATE Gas Heating Exam Questions and Answers – practice questions with answers

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This document contains NATE Gas Heating Exam questions with corresponding answers for study and certification preparation. It covers gas heating systems, components, operation, troubleshooting, safety, and related HVAC concepts relevant to the NATE examination.

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NATE




NATE GAS HEATING EXAM QUESTIONS AND ANSWERS



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% - correct answer C: 78%


Many pre-1992 furnaces have efficiencies around _______.

,NATE




A: 10%


B: 40%


C: 60%


D: 80% - correct answer C: 60%


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


A: 85%


B: 90%


C: 100%


D: 110% - correct answer B: 90%

, NATE


A thermocouple is used with:


A: Intermittent pilot systems


B: Direct spark ignition systems


C: Glow coil ignition systems


D: Standing pilot ignition systems - correct answer D: Standing pilot
ignition systems


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 -
correct answer C: Maintain a constant gas pressure at the burner

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