Nate gas heating air - Study guides, Class notes & Summaries

NATE Gas Heating Exam Verified Questions and answers 2023 Latest Update 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 . 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 ...

NATE Gas Heating (Air) Service Prep Exam Study Guide 2024...

HVAC NATE Gas Heat Exam Prep (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A Q: When starting up a dual system, the temperature rise method for determining airflow cannot be used with compressor cycle of the heat pump because: Answer: The capacity of the system varies too much with outdoor temperature. Q: The flame pattern a technician would expect to see on a properly operating single stage gas furnace equipped with "in shot" type burner is a:...

NATE Gas Heating Exam/ Questions with Verified Answers. Terms like: The three elements of combustion are: A: Fuel, oxygen and ignition B: Nitrogen, oxygen and heat C: Air, fuel and oxygen D: Air, fuel and nitrogen - Answer: A: Fuel, oxygen and ignition Which of the following is a natural result of combustion? A: Water vapor B: Carbon monoxide C: Carbon dioxide D: All of the above - Answer: D: All of the above

NATE Gas Heating Exam Questions and Answers 100% Pass 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: 100% D: 110% -Answer-B: 90% A thermocouple is ...

NATE Heat Pump Exam Questions With Correct Answers Updated 2024/2025 (VERIFIED A+) 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 the outdoor coil? -AnsExcessive ice can build up on the bottom of the coil and can reduce capacity. What is the component that reduces sound transmission and prevents water leaks of a package heat pump installed on a roof? -Ans Cur...

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 ______. ...

HVAC NATE Heat Pump Exam Questions With Correct Answers Updated 2024/2025 (Graded A+) 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 the outdoor coil? -AnsExcessive ice can build up on the bottom of the coil and can reduce capacity. What is the component th...

NATE - Gas & Heat 139 Questions with Complete Solutions 3/8 to 1/2 inch of the end of the thermocouple: - Correct Answer Should be enveloped by the pilot flame A "cross break" made on all sides of any rectangular section of metal duct will: - Correct Answer Increase rigidity and reduced vibration A control string is defined as two or more switch contacts connected in a circuit, or set of circuits, to control a load. In order to troubleshoot a load controlled by a control string, the te...