Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Insulation of Cooling Systems

Cooling systems and insulation thickness.

To avoid

  • heat gain and reduced efficiency of cooling systems
  • condensation of water on surfaces and potential corrosion problems

- pipes in cooling systems should always be insulated.

The insulation thickness of chilled water, refrigerant and brine systems should not be less than indicated below.

Insulation of Cooling Systems
SystemOperation TemperaturePipe Size (inches)
< 1"1 1/4" - 2"2 1/2" - 4"5" - 6"> 8"
(oF)(oC)Insulation Thickness (inches)
Chilled Water 40 - 55 4 - 12 0.5 0.75 1.0 1.0 1.0
Refrigerant < 40 < 4 1.0 1.5 1.5 1.5 1.5
Brine < 40 < 4 1.0 1.5 1.5 1.5 1.5
  • 1 inch = 25.4 mm

Insulation of a cold system should be made with micro-cellular cross-linked polyethylene foam with low water vapor diffusion.

Related Topics

  • Insulation

    Calculate heat transfer and heat loss from buildings and technical applications. Heat transfer coefficients and insulation methods available for reduction of energy consumption.

Related Documents


Search is the most efficient way to navigate the Engineering ToolBox.

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with older versions of the amazing SketchUp Make and the newer "up to date" SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp Make/Pro from the Extension Warehouse !

Translate this Page

Translate this page to Your Own Language .

About the Engineering ToolBox!

Privacy Policy

We don't collect information from our users. More about

We use a third-party to provide monetization technologies for our site. You can review their privacy and cookie policy here.

You can change your privacy settings by clicking the following button: .


This page can be cited as

  • The Engineering ToolBox (2005). Insulation of Cooling Systems. [online] Available at: [Accessed Day Month Year].

Modify the access date according your visit.

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Unit Converter