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NATE Gas Heating Exam Questions with Correct Answers 2023
- Exam (elaborations) • 19 pages • 2023
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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% -AnsC: 78% 
Many pre-1992 furnaces have efficiencies around _______. 
A: 10% 
B: 40% 
C: 60% 
D: 80% -AnsC: 60% 
Today, furnaces with AFUE ratings greater than _____ are available. 
A: 85% 
B: 90% 
C: 100% 
D: 110% -AnsB: 90% 
A thermocouple is used with: 
A:...
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NATE AC Service Certification Questions and Answers 2023
- Exam (elaborations) • 24 pages • 2024 Popular
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A system is supplied from the factory with charge of 5 pounds 10 ounces for a 15 foot line set. The 
line set is 25 feet long. The manufacturer's instruction sheet specifies 0.6 ounces of refrigeration to be 
added for each added foot of refrigerant line set length. What is the total refrigerant charge for the 
system? 
A. 6 ounces 
B. 5 pounds 
C. 5 pounds 10 ounces 
D. 6 pounds - D. 6 pounds 
15ft - 25ft = 10ft x .6 = 6 ounces 
5 pounds + 10 ounces + 6 ounces 
5 pounds + 16 ounces = 6 poun...
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HVAC NATE Heat Pump /171 Questions with Correct Answers Assured A+.
- Exam (elaborations) • 19 pages • 2023
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HVAC NATE Heat Pump /171 Questions with Correct Answers Assured A+. 
On an R-22 system, line diameters and lengths are typically specified for a vapor pressure drop 
that does not exceed what? -Ans 6-7PSI or 6F 
What is the primary purpose of using flux when soldering copper or brass parts? -Ans 
Prevent Oxidation 
The water that results from a defrost cycle of an air to air heat pump(runoff) must? -Ans 
Drain off and away from the outdoor coil. 
Why must the runoff be drained off and away from ...
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NATE Exam: Air Conditioning And Heat Pumps, Core, ICE, AC & HP & NATE Controls Questions And Answers graded A+
- Exam (elaborations) • 58 pages • 2023
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NATE Exam: Air Conditioning And Heat Pumps, Core, ICE, AC & HP & NATE Controls Questions And Answers /NATE Exam: Air Conditioning And Heat Pumps, Core, ICE, AC & HP & NATE Controls Questions And Answers /NATE Exam: Air Conditioning And Heat Pumps, Core, ICE, AC & HP & NATE Controls Questions And Answers
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NATE Exam: Core Refresher, Essentials & STUDY GUIDE Questions and Answers (Graded A)
- Exam (elaborations) • 73 pages • 2023
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NATE Exam: Core Refresher, Essentials & STUDY GUIDE Questions and Answers (Graded A)/NATE Exam: Core Refresher, Essentials & STUDY GUIDE Questions and Answers (Graded A)/NATE Exam: Core Refresher, Essentials & STUDY GUIDE Questions and Answers (Graded A)
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HVAC NATE Heat Pump /171 Questions with Correct Answers Assured A+.
- Exam (elaborations) • 19 pages • 2023
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HVAC NATE Heat Pump /171 Questions with Correct Answers Assured A+. 
On an R-22 system, line diameters and lengths are typically specified for a vapor pressure drop 
that does not exceed what? -Ans 6-7PSI or 6F 
What is the primary purpose of using flux when soldering copper or brass parts? -Ans 
Prevent Oxidation 
The water that results from a defrost cycle of an air to air heat pump(runoff) must? -Ans 
Drain off and away from the outdoor coil. 
Why must the runoff be drained off and away from ...
-
HVAC NATE Heat Pump /171 Questions with Correct Answers Assured A+.
- Exam (elaborations) • 19 pages • 2023
-
- $12.99
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HVAC NATE Heat Pump /171 Questions with Correct Answers Assured A+. 
On an R-22 system, line diameters and lengths are typically specified for a vapor pressure drop 
that does not exceed what? -Ans 6-7PSI or 6F 
What is the primary purpose of using flux when soldering copper or brass parts? -Ans 
Prevent Oxidation 
The water that results from a defrost cycle of an air to air heat pump(runoff) must? -Ans 
Drain off and away from the outdoor coil. 
Why must the runoff be drained off and away from ...
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NATE Heat Pump Exam questions with correct answers
- Exam (elaborations) • 20 pages • 2023
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Charging a heat pump with refrigerant is best accomplished in the _______ mode. 
 
 A: Heating mode 
 
 B: Cooling mode 
 
 C: Defrost mode 
 
 D: Emergency heating mode CORRECT ANSWER B: Cooling mode 
 
Heat pumps can provide both heating in the winter and cooling in the summer. In which mode is the heat pump more efficient? 
 
 A: Heating mode 
 
 B: Cooling mode 
 
 C: Defrost mode 
 
 D: Emergency heating mode CORRECT ANSWER A: Heating mode 
 
Which of the following components is exclusive t...
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NATE Exam: Core Refresher, Essentials & STUDY GUIDE Questions and Answers (Graded A)
- Exam (elaborations) • 73 pages • 2023
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NATE Exam: Core Refresher, Essentials & STUDY GUIDE Questions and Answers (Graded A)/NATE Exam: Core Refresher, Essentials & STUDY GUIDE Questions and Answers (Graded A)/NATE Exam: Core Refresher, Essentials & STUDY GUIDE Questions and Answers (Graded A)
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Combo with NATE Heat Pump Exam and 1 other 140 Questions with Complete Solutions
- Exam (elaborations) • 42 pages • 2023
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Combo with NATE Heat Pump Exam and 1 other 140 Questions with Complete Solutions 
Charging a heat pump with refrigerant is best accomplished in the _______ mode. 
 
 A: Heating mode 
 
 B: Cooling mode 
 
 C: Defrost mode 
 
 D: Emergency heating mode - Correct Answer B: Cooling mode 
 
Heat pumps can provide both heating in the winter and cooling in the summer. In which mode is the heat pump more efficient? 
 
 A: Heating mode 
 
 B: Cooling mode 
 
 C: Defrost mode 
 
 D: Emergency heating mod...
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NATE Exam: Air Conditioning and Heat Pumps Questions with Complete Solutions
- Exam (elaborations) • 27 pages • 2023
- Available in package deal
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NATE Exam: Air Conditioning and Heat Pumps Questions with Complete Solutions 
Which of the following factors affects a customer's level of comfort? 
 
a. Air movement 
b. Humidity 
c. Temperature 
d. All of the above - Correct Answer d (All of the above: air movement, humidity, temperature) 
 
A cooling load calculation estimates the sensible heat gain of a structure. The maximum sensible capacity of a cooling-only system should be within ____% of this calculated value. 
 
a. ±10% 
b. +10% 
c....
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NATE Air Conditioning and Heat Pump Study Questions and Answers 2023
- Exam (elaborations) • 15 pages • 2023
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NATE Air Conditioning and Heat Pump Study Questions and Answers 2023 
 
A cooling load calculation estimates the sensible heat gain of the structure. The cooling-only system should be within _____% of this calculated value. - ANSWER-+15% 
 
The maximum sensible cooling capacity of a heat pump should be within ______% of the calculated sensible heat gain of a structure with a large heating load. - ANSWER-+25% 
 
The combined output of a heatpump and its auxiliary heat should not exceed the calcul...
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