NATE Gas Heating Exam COMPREHENSIVE QUESTIONS WITH MULTIPLE CHOICES |VERIFIED & REVISED ANSWERS (NEW) 2026

NATE Gas Heating Exam COMPREHENSIVE
QUESTIONS WITH MULTIPLE CHOICES
|VERIFIED & REVISED ANSWERS (NEW) 2026

Save




Terms in this set (50)



Since 1992, the United States C: 78%
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%


Many pre-1992 furnaces have C: 60%
efficiencies around _______.


A: 10%


B: 40%


C: 60%


D: 80%

,Today, furnaces with AFUE ratings B: 90%
greater than _____ are available.


A: 85%


B: 90%


C: 100%


D: 110%


A thermocouple is used with: D: Standing pilot ignition systems


A: Intermittent pilot systems


B: Direct spark ignition systems


C: Glow coil ignition systems


D: Standing pilot ignition systems


The purpose of the gas pressure C: Maintain a constant gas pressure at the burner
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

, The instrument used to measure C: Monometer
outlet gas pressure is the:


A: Velometer


B: Anemometer


C: Monometer


D: Draft gauge


The regulator on a natural gas C: 3.5"
furnace should be adjusted to
supply _____ inches of pressure at the
burners.


A: 11"


B: 10"


C: 3.5"


D: 2"


Burning one cubic foot of natural B: 1,050
gas releases approximately _____ btu.


A: 800


B: 1,050


C: 12,000


D: 15,000