What does BTU stand for in relation to boiler heating?

BTU stands for British Thermal Unit, which is a key measurement in heating systems, including boilers. It quantifies the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit at a constant pressure. Understanding BTUs is crucial for evaluating a boiler's heating capacity and efficiency. A boiler's output is commonly rated in BTUs, allowing professionals to compare the energy output of different models and sizes, ensuring that the heating system meets the specific needs of a space effectively. This measurement plays a significant role in system design, energy usage calculations, and overall performance assessments.