We did complex — you do awesome

Coolselector®2 helps you optimize energy consumption and increase efficiency in any HVACR system. Run unbiased calculations based on a set of operating conditions — such as cooling capacity, refrigerant, evaporation, and condensation temperature — and then select the best components for your design. We’ve removed the complexity from the equation so that you can focus on what you do best: being awesome.


Get version 3.5.2 now!

Coolselector®2 is currently at version 3.5.2 (last updated on 7.10.2019)

Changes in 3.5.2:

  • Changes and bug fixes

Changes in 3.5.0:

  • Eco-damper application
  • Economizer gas line
  • Optyma™ Slim Pack (NAM range) qualified for R452A
  • LGWP refrigerants qualified for Optyma™ for North America
  • Changes and bug fixes

Features and benefits

Download and use Coolselector®2 for free

Save time on complicated calculations

Customize your preferences

View and download detailed log(p)-h diagrams

Export easy-to-read reports to share with clients and coworkers

Print or save component code lists for easy ordering

Using a Mac or a Tablet?

Coolselector®2 is available for use in a browser. If you are using a Mac or a tablet, access our free online version.

Launch Coolselector®2 online

Coolselector®2 webinars

Attend one or more of our Coolselector®2 webinars hosted by Danfoss' specialists. You can either participate live or view on-demand after the event. You are always welcome to submit your questions, and we will be happy to answer them.



The refrigeration software offers market-leading simplicity and professional ease in the system design process of all commercial and industrial refrigeration projects. A unique tool that truly makes the complex simple. One software for all your selection and calculation needs.


Type Name Language Valid for Updated Download File type
Promotion material Coolselector®2 Exercises English Multiple 03 Jun, 2019 13.2 MB .pdf
Installation guide Coolselector®2 Server Installation Guide English Multiple 20 Nov, 2018 1.2 MB .pdf
User guide Coolselector®2 User Guide English Multiple 03 Jun, 2019 4.3 MB .pdf



Coolselector®2 Startup School

Learn how to use Coolselector®2 and operate it with confidence by participating in the Coolselector®2 Startup School. This extensive collection of training videos and exercises gives you insight into the technical workings of the software and shows you how to get the most out of it. 

See the full playlist here (17 videos)

Coolselector®2 Deep Dive

Dive into the details and learn about the principles that drive this powerful software. The Coolselector®2 Deep Dive series is hosted by Morten Juel Skovrup, lead developer of Coolselector®2.

See the full playlist here (11 videos)

Contact us

For further information, please contact us.



Installation of Coolselector®2 (“the Application”) is provided on an “as is” and “as available” basis for the intended purposes as determined by Danfoss only and any use hereof is at the user’s sole risk. The Application and results and information generated thereby cannot substitute technical advice but must be verified by the user, they are not promises and should not be relied on as accurate data or analyses.

Danfoss disclaims all warranties and conditions regarding the Application, whether express, implied, or statutory, including, but not limited to, conditions of merchantability, satisfactory quality, fitness for a particular purpose, accuracy and non-infringement of third parties’ rights. Danfoss does not warrant that the Application will meet your requirements or that the operation hereof will be uninterrupted or error-free. To the extent not prohibited by law, in no event shall Danfoss be liable for any direct, special, indirect or consequential damages, whatsoever, including, without limitation, damage to property, damages for loss of savings or profits, or loss of data arising out of any use of the Application.

©2018 Danfoss A/S