Enter the total heat removed by the heat pump (J) and the total work needed to remove the heat (J) into the calculator to determine the Heat Pump Efficiency.

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## Heat Pump Efficiency Formula

The following formula is used to calculate the Heat Pump Efficiency.

**Ehp = HR / W *100**

- Where Ehp is the Heat Pump Efficiency (%)
- HR is the total heat removed by the heat pump (J)
- W is the total work needed to remove the heat (J)

## How to Calculate Heat Pump Efficiency?

The following two example problems outline how to calculate the Heat Pump Efficiency.

**Example Problem #1:**

- First, determine the total heat removed by the heat pump (J). In this example, the total heat removed by the heat pump (J) is given as 594.
- Next, determine the total work needed to remove the heat (J). For this problem, the total work needed to remove the heat (J) is given as 1000.
- Finally, calculate the Heat Pump Efficiency using the equation above:

Ehp = HR / W *100

Inserting the values from above and solving the equation:

Ehp = 594 / 1000 *100 = 59.4 (%)

**Example Problem #2: **

Using the same process as above, first define the variables required by the formula. In this case, these values are:

total heat removed by the heat pump (J) = 500

total work needed to remove the heat (J) = 600

Entering these values yields:

Ehp = 500 / 600 *100 = 83.33 (%)