AFUE rating indicates the efficiency of which equipment?

AFUE rating indicates the efficiency of which equipment?

• A. Oil furnace
• B. Gas-fired furnace
• C. Electric furnace
• D. Propane furnace

Answer: (B)

AFUE, or Annual Fuel Utilization Efficiency, measures how effectively a furnace uses the energy in its fuel to create heat over a typical year. It applies to furnaces that burn fuel (gas, oil, or propane), not to electric furnaces, which aren’t rated by AFUE. In the provided options, a gas-fired furnace is the representative example of a fuel-burning unit whose annual efficiency is rated. Higher AFUE means more of the fuel energy is converted to usable heat and less is wasted, which can lower operating costs.

AFUE, or Annual Fuel Utilization Efficiency, measures how effectively a furnace uses the energy in its fuel to create heat over a typical year. It applies to furnaces that burn fuel (gas, oil, or propane), not to electric furnaces, which aren’t rated by AFUE. In the provided options, a gas-fired furnace is the representative example of a fuel-burning unit whose annual efficiency is rated. Higher AFUE means more of the fuel energy is converted to usable heat and less is wasted, which can lower operating costs.