WebAn example you can reference: If a furnace is listed with an input rating of 100,000 BTU's and an efficiency rating of 80%, it would produce: 100,000 Btu input X .80 efficiency 80,000 Btu actual output If the same 100,000 BTU furnace has an efficiency rating of 93% it will produce: 100,000 Btu input X .93 efficiency 93,000 Btu actual output WebDec 6, 2024 · One BTU represents the energy needed to heat a single pound of water by one degree Fahrenheit. A single BTU is equivalent to 1,055 joules, 252 calories, or the energy released by burning one match. The higher the number of BTUs your furnace requires, the more expensive your utility bill will be.
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WebBTU or ‘British Thermal Unit’ is a unit of heat. 1 BTU is enough heat to raise the temperature of 1 pound of water by 1°F. US households require anywhere from 20,000 BTU to 300,000 BTU of heating output in the winter. To calculate how many BTU of heating output you need, you have to know only 3 factors: WebNov 2, 2024 · Furnace for a 1,200-square-foot house: 35,000 to 75,000 BTUs. Furnace for a 1,800-square-foot house: 55,000 to 110,000 BTUs. Furnace for a 2,100-square-foot house: 65,000 to 125,000 BTUs. Furnace for a 2,400-square-foot house: 70,000 to 145,000 BTUs. The BTU usage for each house size is not a single number but rather a range, so the … bing overseas
How Much BTU Do I Need? A Comprehensive Guide to Calculating …
WebJul 13, 2024 · The generally accepted BTU per square foot heating rule of thumbranges from 30 BTU to 60 BTU per square foot. That’s a wide difference, essential one furnace being twice as large as the other, so the size factors are discussed to help you narrow down the right BTUs needed for your home. WebNov 8, 2024 · A furnace's heat output is measured by British Thermal Unit (BTU), which is the amount of energy needed to heat one pound of water by one degree Fahrenheit. As a … WebI have also measured that on low speed my furnace requires AT-LEAST 1 hour of constant running to raise my home temp by 6 deg F. On high speed it takes 30-40 min. With a one-gallon-per-hour burner nozzle that saves me AT-LEAST 30% on fuel oil plus another 20-30 min of blower run time or at least 30-50% run time savings. bing overwatch coins