Enter the BTU and 12,000 into the calculator to determine the tonnage of the heat pump.

Heat Pump Tonnage Formula

The following formula is used to calculate the tonnage of a heat pump.

T = (BTU / 12,000)

Variables:

  • T is the tonnage of the heat pump
  • BTU is the British Thermal Units per hour (BTU/h)

To calculate the tonnage of a heat pump, divide the British Thermal Units per hour by 12,000. The result is the tonnage of the heat pump.

What is a Heat Pump Tonnage?

Heat pump tonnage refers to the heat output capacity of a heat pump. It is a measure of how much heat a heat pump can remove from a home in an hour. The term “tonnage” comes from the fact that it used to take 1 ton of ice to cool a room for 24 hours. Therefore, a 1-ton heat pump can remove as much heat as 1 ton of ice would absorb in melting over a 24-hour period. This measurement helps in determining the right size of heat pump needed for a particular space or building.

How to Calculate Heat Pump Tonnage?

The following steps outline how to calculate the Heat Pump Tonnage.


  1. First, determine the BTU value (BTU/h).
  2. Next, divide the BTU value by 12,000.
  3. Finally, calculate the Tonnage of the heat pump.
  4. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem:

Use the following variables as an example problem to test your knowledge.

BTU = 36,000 BTU/h

T = ?