Exam (elaborations)
NATE Gas Heating Exam 2023 with 100% complete answers
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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 answersC: 78% Many pre-1992 furnaces have efficiencies around _______. A: 10% B: 4...
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