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 …

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 …

May 3, 2025 · 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 heat (or cooling) can be generated by …

Jul 17, 2025 · Btu stands for British Thermal Unit, a traditional unit of measurement for energy or heat. It is commonly used in HVAC (heating, ventilation, and air conditioning) systems to quantify how much …

Jun 3, 2025 · This guide to BTU meaning answers your questions and is designed to help you understand the BTU or heat capacity options for furnaces, air conditioners, boilers and other home …

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's are a commonly used specification on heating and cooling systems. But what is BTU? We explain it in simple terms and provide calculators, conversion charts and more.

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 …

Wondering 'What is a BTU'? This HVAC guide explains British Thermal Units, why they're crucial for your heating & cooling system, sizing, and energy efficiency.

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.