One refrigeration ton is equal to 12000 BTUs per hour: 1 RT = 12000 BTU/hr One BTU per hour is equal to 8.33333×10-5 refrigeration ton: 1 BTU/hr = 8.33333×10-5 RT So the power P in BTUs per hour (BTU/hr) is equal to 12000 times the power P in refrigeration