BTU

**BTU**

BTU stands for British Thermal Unit, which is a traditional unit of heat. It measures the amount of energy needed to raise the temperature of one pound of water by one degree Fahrenheit. BTUs are commonly used in heating, ventilation, and air conditioning (HVAC) systems to quantify energy output or consumption. This tag is useful for posts related to energy efficiency, heating appliances, cooling systems, and other topics where thermal energy measurement is relevant.