Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question

How to convert an OpenStudio model to an older version ?

asked 2018-07-09 02:36:03 -0500

updated 2018-07-09 07:26:44 -0500

Hi, I want to load a file that I created in OS V2.5, but my actual version is V.13.4 and when I try that I get this message: Error: Version extracted from file '2.5.0' is newer than current OpenStudio Version 1.13.4. What should I do ? Is there a way to convert it (a link or something)? Thanks

edit retag flag offensive close merge delete

3 Answers

Sort by ยป oldest newest most voted

answered 2018-07-09 13:18:47 -0500

updated 2018-07-09 16:09:56 -0500

OpenStudio models are not forwards-compatible with prior versions. You will need to download and use OpenStudio version 2.5+ to open a version 2.5.0 model.

edit flag offensive delete link more



Sorry to be pedantic, but what is being discussed here is not backward compatibility, but rather forward compatibility, the ability of older software to accept inputs created by newer versions. Forward compatibility is much harder than backward compatibility and few software packages support it in a general way.

__AmirRoth__ gravatar image__AmirRoth__ ( 2018-07-09 13:52:13 -0500 )edit

thanks for the clarification Amir - I didn't know the distinction.

mdahlhausen gravatar imagemdahlhausen ( 2018-07-09 16:09:39 -0500 )edit

answered 2018-07-11 00:42:52 -0500

Binghang gravatar image

If your model does not contain any features from the newer version OS, you still can open it in an earlier version by revising the version identifier to 1.13.4 in OSM file. Or you have to delete new components in your model until you can open it in the previous version. Then you can add deleted components back in the previous version. I think this not a smart way but it does the work.


{52ebc7df-1931-44b8-9258-342ba3730fbd}, !- Handle

2.5.0; !- Version Identifier

edit flag offensive delete link more

answered 2018-07-21 21:29:06 -0500

blucu gravatar image

You could try with this: first export the model in gbXML and then import the gbXML model to your earlier OS version, greetings

edit flag offensive delete link more


This will only import geometry, not HVAC

mdahlhausen gravatar imagemdahlhausen ( 2018-07-22 10:27:59 -0500 )edit

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer


Question Tools

1 follower


Asked: 2018-07-09 02:36:03 -0500

Seen: 204 times

Last updated: Jul 21 '18