NATE AC Service Certification Exam With 100% Correct Answers 2025/2026

NATE AC Service Certification Exam With 100% Correct Answers 2025/2026 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 - answer-D. 6 pounds 15ft - 25ft = 10ft x .6 = 6 ounces 5 pounds + 10 ounces + 6 ounces 5 pounds + 16 ounces = 6 pounds The purpose of using flux when soldering is to: A. anneal the surface. B. give better heat flow. C. reduce oxidation. D. pre-seal the oxidation. - answer-C. reduce oxidation. Outdoor condensing units that are installed in areas where flooding is possible must: A. be mounted above flood level.B. utilize NEMA 1 enclosures. C. be mounted under an overhanging eave. D. use water resistant components. - answer-A. be mounted above flood level. The component used to reduce sound transmission and prevent water leaks on a rooftop air conditioner packaged unit installation is the: A. curb gasket. B. silicone caulk. C. roof flashing. D. roofing tar. - answer-A. curb gasket. Return air leakage in a hot attic will: A. Increase capacity B. Decrease capacity C. Increase airflow D. Decrease airflow - answer-B. Decrease capacity