Nate gas Study guides, Class notes & Summaries
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NATE Gas Heating Exam/ 50 Questions & Answers/ 2024-2025.
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NATE Gas Heating Exam/ 50 Questions & Answers/ . Terms like: 
 
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% - Answer: C: 78% 
 
Many pre-1992 furnaces have efficiencies around _______. 
 
 A: 10% 
 
 B: 40% 
 
 C: 60% 
 
 D: 80% - Answer: C: 60% 
 
Today, furnaces with AFUE ratings greater than _____ are available. 
 
 A: 85% 
 
 B: 90% 
 
 C:...
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NATE Gas Heat Practice Guide (2022/2023) Rated A+
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What precautions are required when mounting any gas furnace on a wood platform in an attic? 
None 
The gas control valve may be damaged if exposed to an inlet pressure above what? 14 inch 
W.C. 
How many elbows and joints should a vent connector have? As few as possible to reduce 
resistance of flue gases. 
Under what conditions, if any may the technician route the exhaust of the furnace into the 
exhaust vent of the water heater: Under no conditions may you use the water heater exhaust 
vent. 
...
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NATE GAS HEATING LATEST EXAM 2024-2025 COMPLETE 50 ACTUAL TEST QUESTIONS AND CORRECT DETAILED ANSWERS (100% CORRECT VERIFIED ANSWERS) A NEW UPDATED VERSION |ALREADY GRADED A+ (BRAND NEW!!)
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NATE GAS HEATING LATEST EXAM COMPLETE 50 ACTUAL TEST QUESTIONS AND CORRECT DETAILED ANSWERS (100% CORRECT VERIFIED ANSWERS) A NEW UPDATED VERSION |ALREADY GRADED A+ (BRAND NEW!!)
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NATE Gas Heating Exam Verified Questions and answers 2023 Latest Update
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NATE Gas Heating Exam Verified Questions and answers 2023 Latest Update
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NATE Gas Heating Exam – Questions With Solutions
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NATE Gas Heating Exam – Questions With Solutions
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Nate Gas Furnace Service
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What precautions, if any, must be taken when installing a gas furnace on a wooden platform in an attic? - Answer- Use a zero-clearance furnace or add a non-combustible base 
 
A vent connector should have a as few elbows and joints as possible to: - Answer- Reduce resistance of flue gases 
 
The gas control valve may be damaged if exposed to an inlet pressure above - Answer- 14in wc 
 
To which thermostat is leveling the most critical: - Answer- Mercury Bulb 
 
Which of the following is a reason...
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NATE Gas Heating Exam with Complete Solutions 100% Verified Graded A+
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NATE Gas Heating Exam with Complete Solutions 100% Verified Graded A+ 
In a modern gas furnace, the component that separates the combustion gases from the supply air is the ______. 
a. gas valve 
b. heat exchanger 
c. inducer fan 
d. plenum box - Correct Answer b (heat exchanger) 
 
What type of furnace moves warm air through the conditioned space without a fan? 
a. Gravity 
b. Horizontal 
c. Lowboy 
d. Upflow - Correct Answer a (Gravity) 
 
Furnace heat exchangers generally are made of ______. ...
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NATE Gas Heating Exam 2024 with correct answers
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NATE Gas Heating Exam 2024 with correct answers
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NATE GAS HEATING EXAM QUESTIONS WITH CORRECT ANSWERS
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NATE GAS HEATING EXAM QUESTIONS WITH 
CORRECT 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% - -C: 78% 
Which of the following is a natural result of combustion? 
A: Water vapor 
B: Carbon monoxide 
C: Carbon dioxide 
D: All of the above - -D: All of the above 
Many pre-1992 furnaces have efficiencies around _______. 
A: 10% 
B: 40% 
C: 60% 
D: 80% ...
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NATE Gas Heating Study Guide Exam Well Answered 2024.
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b (heat exchanger) - Answer In a modern gas furnace, the component that separates the combustion gases from the supply air is the ______. 
a. gas valve 
b. heat exchanger 
c. inducer fan 
d. plenum box 
 
a (Gravity) - Answer What type of furnace moves warm air through the conditioned space without a fan? 
a. Gravity 
b. Horizontal 
c. Lowboy 
d. Upflow 
 
d (steel) - Answer Furnace heat exchangers generally are made of ______. 
a. ceramic 
b. copper 
c. plastic 
d. steel 
 
b (Annual Fuel...
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