Service & Troubleshooting第 82 / 110 题
AFUE is the efficiency rating used for what equipment?
a.Air conditioners
b.Cooling towers
c.Gas and oil furnaces
d.Duct systems
解析
Annual Fuel Utilization Efficiency (AFUE) expresses the percentage of fuel energy a furnace converts to usable heat over a season. A 95 percent AFUE furnace delivers 95 percent of the fuel's energy as heat. It is the standard heating-efficiency metric for furnaces.
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