Exam (elaborations)
NATE Gas Heating 50 Exam Questions And Answers
- Course
- Institution
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% - ️️C: 78% Many pre-1992 furnaces have efficiencies around _______. A: 10% B: 40% ...
[Show more]