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

## 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.

1. First, determine the summer U-value.
2. Next, determine the shading coefficient.
3. Next, gather the formula from above = RHG = (US * 14) + (SC*200).
4. Finally, calculate the Relative Heat Gain.
5. 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