NATE Gas Heating Exam Questiond & Correct Answers | Latest Update 2026/2027 | Graded A+.

NATE Gas Heating Exam Questiond & Correct
Answers | Latest Update 2026/2027 | Graded A+.


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%: C: 78%

2. Many pre-1992 furnaces have efficiencies around .






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A: 10%



B: 40%


C: 60%





,D: 80%: C: 60%




3. A thermocouple is used with:



A: Intermittent pilot systems



B: Direct spark ignition systems C:

Glow coil ignition systems

D: Standing pilot ignition systems: D: Standing pilot ignition systems




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

Velometer

B: Anemometer

C: Monometer

D: Draft gauge: C: Monometer
6. T

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": C: 3.5"



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



A: 85%



B: 90%



C: 100%



D: 110%: B: 90%