Enter the fractional amount of solar energy that passes through a pane of glass into the calculator to determine the TSER.

TSER Calculator

Use the main tab to estimate how much solar heat a window film rejects, the second tab to convert SHGC and TSER, and the third tab to interpret a TSER value in plain English.
Window Film Heat Rejection
SHGC ↔ TSER
TSER Interpreter

Enter the solar heat load at the window before film and the film’s TSER. The calculator estimates how much heat is rejected and how much still gets through.

Heat Load Unit
BTU/h
Watts
Example: if a window gets 2000 BTU/h of solar heat and the film has 60% TSER, the film rejects about 1200 BTU/h and about 800 BTU/h still gets through.

Enter one value only. This converts between SHGC and TSER and also shows solar energy admitted and shading coefficient.

TSER = 100 × (1 – SHGC). SHGC = 1 – TSER ÷ 100.

Enter a TSER value and get a plain-language interpretation of the film’s heat rejection strength.

This tab is a simple guide. It groups TSER into practical ranges so users can tell whether a film rejects a low, moderate, strong, or very strong share of solar energy.
TSER is total solar energy rejected. The interpretation ranges in this widget are practical guides, not a formal industry standard. Actual performance depends on the specific film, glass system, installation, and test method.

TSER Formula

The following equation is used to calculate the TSER.

TSER = (1-SHGC) *100
  • Where TSER is the total solar energy rejected
  • SHGC is the fractional amount of energy that has passed through a pane of glass

To calculate TSER, subtract the SHGC from 1, then multiply by 100.

The sum of the TSER and the SHFC should always equal 100%.

What is TSER?

Definition:

TSER, short for total solar energy rejected, is a measure of the amount of solar energy that is rejected by a semi-translucent material, such as glass.

How to Calculate TSER?

Example Problem:

The following example outlines the steps and information needed to calculate TSER.

First, determine the total fraction amount of solar energy that was able to pass through the material.

In this example, this is found to be .45 .

Next, the final and last last is to use the formula above to determine the total solar energy rejected

TSER = (1-SHGC) *100

TSER = (1-.45) *100

TSER = 55%