Exam (elaborations)
NATE Gas Heating Exam Questions and Answers Already Passed
- Course
- Institution
NATE Gas Heating Exam Questions and Answers Already Passed 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 arou...
[Show more]