Commercial Split Systems Builder 1.39 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus.
The latest version of the program is supported on PCs running Windows XP/Vista/7/8/10/11, 32-bit. The Commercial Split Systems Builder installer is commonly called CSB10.exe, CSB11.exe or CSB12.exe etc. The actual developer of the free software is Carrier Corporation. The most popular versions among Commercial Split Systems Builder users are 1.3 and 1.2. Commercial Split Systems Builder is included in Education Tools.
From the developer:
This software is a "builder" tool for Carrier Commercial Split Systems match Carrier’s indoor-air handlers and direct-expansion coils with outdoor condensing units, heat pump systems and chilled water coils. A "builder" combines selection, performance and configuration tools in a single software package. For Carrier users it also provides pricing features.
You may want to check out more software, such as Karaoke Builder Studio, SysTools vCard Split & Merge Tool or Split & Concat, which might be similar to Commercial Split Systems Builder.