What is indicated by the term 'BTUH' in the context of water heaters?

The term 'BTUH' stands for British Thermal Units per Hour and is an essential measure in the context of water heaters and heating systems in general. It quantifies the rate at which energy is used or delivered. Specifically, in water heaters, BTUH indicates how many British Thermal Units are generated or consumed in one hour, helping to determine the heating capacity of the system.

Understanding BTUH is crucial for sizing water heaters appropriately for specific applications. For instance, a water heater with a higher BTUH rating can heat water more quickly, making it suitable for applications with higher demand for hot water. This metric is frequently used by technicians and engineers to evaluate the efficiency and performance of heating systems, ensuring that the selected unit can meet the required hot water needs.