The British thermal unit (Btu) is a measure of heat, which is a form of energy. It was originally defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.

British thermal unit (Btu) is a measure of the heat content of fuels or energy sources. One Btu is the quantity of heat required to raise the temperature of one pound of liquid water by 1&deg Fahrenheit …

British thermal unit (BTU), a measure of the quantity of heat, defined since 1956 as approximately equal to 1,055 joules, or 252 gram calories. It was defined formerly as the amount of heat required to raise …

BTU stands for British Thermal Unit, a unit of measurement that shows just how much energy your heating or cooling unit uses to remove heat from your home within an hour.

May 3, 2025 · That’s what this article explains. BTU, short for British Thermal Unit, is a standardized, basic measurement of energy for all heating and cooling appliances. It is a measure of how much …

Feb 7, 2025 · BTU stands for British Thermal Unit. It is a unit of measurement that quantifies the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. This …

Jun 18, 2025 · BTU stands for British Thermal Units and is a measurement of thermal energy. It was first used in the late 1800s and has since become one of the most common units of classification in …

Jun 3, 2025 · A BTU, also spelled Btu, is defined as the amount of heat required to heat or cool one pound of water 1 degree Fahrenheit when the water is at sea level. A gallon of water weighs 8 pounds.

Despite its name, the British thermal unit, or BTU, may be more widely used in North America than in Britain. Air conditioners, furnaces, and stoves are generally rated by BTUs.

Dec 4, 2025 · BTU stands for British Thermal Unit. It is a unit that measures heat energy. People use BTUs to talk about how much heat something can give off or take away. For example, heaters, …