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NATE Gas Heating Exam Questions and Answers 100% Pass
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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...
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