Enter the summer U-value and the shading coefficient into the Relative Heat Gain Calculator. The calculator will evaluate the Relative Heat Gain.

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## Relative Heat Gain Formula

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

RHG = (US * 14) + (SC*200)

Variables:

- RHG is the Relative Heat Gain (F)
- US is the summer U-value
- SC is the shading coefficient

To calculate the relative heat gain, multiply the summer u-value by 14, then add it to the product of the shading coefficient times 200.

## How to Calculate Relative Heat Gain?

The following steps outline how to calculate the Relative Heat Gain.

- First, determine the summer U-value.
- Next, determine the shading coefficient.
- Next, gather the formula from above = RHG = (US * 14) + (SC*200).
- Finally, calculate the Relative Heat Gain.
- 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.

summer U-value = 1.25

shading coefficient = .75

RHG = (US * 14) + (SC*200)** **= ?