What is the BTU output of an electric heater rated at 20 kW?

To determine the BTU output of an electric heater rated at 20 kW, it is important to understand the conversion factor between kilowatts and BTUs. One kilowatt is equivalent to approximately 3,412 BTUs per hour.

To find the BTU output for a 20 kW heater, you would multiply the kW rating by the conversion factor:

20 kW × 3,412 BTU/kW = 68,240 BTUs.

This calculation shows that a 20 kW electric heater outputs approximately 68,240 BTUs per hour, making this the correct answer. Understanding this conversion is crucial for evaluating the efficiency and capacity of heating appliances, as it allows for accurate comparisons with other heating sources, like gas or oil heaters.