An energy rating (stated as a percentage) that indicates how efficiently a new furnace or boiler will heat a home. The higher the number, the more efficient the heating equipment. It takes into account the cyclic on/off operation and associated energy losses of the heating unit as it responds to changes in the load, which in turn is affected by changes in weather and occupant controls.
AFUE measures average annual seasonal efficiency of a gas furnace or boiler and may be expressed as total heating output divided by total energy (fuel) input. AFUE's for furnaces can range from 55% to 97%.
(AFUE) Seasonal efficiency of a gas-fired furnace or boiler. Takes into account cyclic operation. The higher the number, the more efficient the heating equipment.
The measure of seasonal or annual efficiency of a residential heating furnace or boiler. It takes into account the cyclic on/off operation and associated energy losses of the heating unit as it responds to changes in the load, which in turn is affected by changes in weather and occupant controls.
(AFUE) - A rating that denotes the efficiency of gas heating equipment. It is the amount of heating your equipment delivers for every dollar spent on fuel. An indication of how well a furnace converts energy into usable heat. A higher rating indicates more efficient equipment. The rating is expressed as a percentage of the annual output of heat to the annual energy input to the furnace. This rating is calculated in accordance with the Department of Energy test procedures.
AFUE): A measure of heating efficiency, in consistent units, determined by applying the federal test method for furnaces. This value is intended to represent the ratio of heat transferred to the conditioned space by the fuel energy supplied over one year.
(AFUE) A rating for the seasonal or annual efficiency of natural gas and oil systems. The higher the rating, the more efficient the unit. For ENERGY STAR® products, the AFUE rating is 90.
The annual fuel utilization efficiency (AFUE; pronounced 'A'-'Few') is a thermal efficiency measure of combustion equipment like furnaces, boilers, and water heaters.
