Thermal Insulation Calculator - ArmaWin

The quality of the thermal insulation material and the installation workmanship are two important factors in ensuring the reliable performance of the insulation system. However, the correct selection of the appropriate insulation thickness is a critical factor that must not be overlooked. This is because the right insulation thickness will most effectively prevent condensation and minimise energy losses.


ArmaWin is a professional insulation calculation tool developed by Armacell to support specifiers, mechanical engineers and contractors. This insulation calculator can help to precisely calculate technical values such as the following, as well as determine the optimal insulation thickness based on economic consideration.


  • surface temperature
  • condensation prevention or condensation control
  • density of heat flow
  • change in temperature of flowing medium
  • change in temperature of the stationary medium
  • freezing time
  • surface heat transfer by convection and radiation

This tool is free to download and project-related reports, which includes graphical illustrations to facilitate ease of reading, can also be saved for future use or forwarded via e-mail.


Update (3 Feb 2020)
Bug fix and inclusion of calculation method for round ducts.

Update (15 Apr 2020)
Bug fix for freezing time calculation type.


Getting started with ArmaWin

Learn how to calculate insulation thickness for condensation control with our ArmaWin cheat sheet and videos.

How to calculate insulation thickness for condensation control - ArmaWin
How to calculate insulation thickness for condensation control - Existing projects
How to calculate insulation thickness for condensation control - New projects

About Armacell - who we are

As the inventors of flexible elastomeric foams for equipment insulation purposes, Armacell develops innovative and safe thermal, acoustic, and mechanical solutions. By enabling energy efficiency for equipment we validate our global leadership in flexible technical foams. We provide innovative solutions offering reliable, certified performance, complemented by world-class practices to strengthen our premium brand position.