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Q » What does AFUE mean in HVAC efficiency?

Steven

08 Dec, 2025

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A » AFUE stands for Annual Fuel Utilization Efficiency, a metric used in HVAC systems to measure the efficiency of gas and oil furnaces. It represents the percentage of fuel converted into usable heat over a typical year. A higher AFUE rating indicates a more efficient furnace, leading to lower energy costs and reduced environmental impact. For example, an AFUE of 90% means 90% of the fuel becomes heat, while the remaining 10% is lost.

Michael

09 Dec, 2025

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A »AFUE stands for Annual Fuel Utilization Efficiency, measuring a furnace's efficiency in converting fuel to heat. It's a percentage rating where higher values indicate more efficient fuel use. For example, an AFUE of 90% means 90% of the fuel is converted to usable heat, while 10% is lost.

David

09 Dec, 2025

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