Converting between BTUs per hour (BTU/h) and refrigeration tons is essential for understanding heating and cooling capacities. One refrigeration ton is defined as the rate of heat transfer that results in the freezing or melting of one ton of pure ice at 0°C in 24 hours, which equates to 12,000 BTU/h. Therefore, to convert BTU/h to refrigeration tons, divide the power in BTU/h by 12,000. For example, 24,000 BTU/h divided by 12,000 equals 2 refrigeration tons. Conversely, to convert refrigeration tons to BTU/h, multiply the number of tons by 12,000. This conversion is widely used in North America to specify the capacity of air conditioning and refrigeration equipment.