note:

• The above estimation of heat reduced by window film is the solar radiation that enters through the window.
• The above estimation doesn’t include the number of people, computers, lights, outside temperature, dispenser, open doors, etc.
• The above estimation is taken from the same room temperature before and after.
• The above estimation is taken with an AC in healthy condition with sufficient Freon.

Calculation reference:

• https://www.rapidtables.com/convert/power/BTU_to_Watt.html
• Measurement was made with an equipment of EDTM from USA, with a result such as: