Enter the total heat input and the system efficiency (%) into the Heat Output Calculator. The calculator will evaluate the Heat Output.

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## Heat Output Formula

The following two example problems outline the steps and information needed to calculate the Heat Output.

**HO = HI * E/100**

Variables:

- HO is the Heat Output ( )
- HI is the total heat input
- E is the system efficiency (%)

## How to Calculate Heat Output?

The following steps outline how to calculate the Heat Output.

- First, determine the total heat input.
- Next, determine the system efficiency (%).
- Next, gather the formula from above = HO = HI * E/100.
- Finally, calculate the Heat Output.
- 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.

total heat input = 40

system efficiency (%) = 25

HO = HI * E/100** **= ?