Energy Loss Calculator for Traffic Doors

A strip door effectively blocks at least 65% (conservatively) of air passing through a doorway, resulting in greater energy savings. Use the calculator below to determine the amount of energy you will save by installing a TMI strip door within your facility.

Door Size (in feet)

Average Wind Speed

Cubic Feet Per Minute

Temperature Differential


BTU Loss Formulas

Hourly BTU Loss

Daily BTU Loss

Energy to Cost Conversions

Heat Type
Daily Cost Per Opening
X $

* Please consult the National Weather Service if you're unsure.
† Based on an air temperature of 70° F and .057 pounds per cubic foot density. As the temperature drops, density increases and the constant will be higher than 1.08. For example, at 15° F, the value should be approximately 1.29.
‡ This is available from your local utility provider.