BTU stands for British Thermal Unit, a unit of measurement used to quantify the amount of heat energy. One BTU is equivalent to the amount of energy required to raise the temperature of one pound of water by one degree Fahrenheit. The higher the BTU rating, the greater the heating or cooling capacity of the device, indicating its ability to generate or remove heat. Understanding BTUs is essential for selecting appropriately sized HVAC equipment to effectively regulate
temperature in indoor spaces.