DDY File Type- The quick facts
What are DDY files and how to open them
Are you having problems opening a DDY file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.
What is a DDY file?
A .DDY file is an ASHRAE Design Conditions Design Day data file. Through our analysis of DDY files, we know that one use of the format is ASHRAE Design Conditions Design Day data. We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.
How to open DDY files
Important: Different programs may use files with the DDY file extension for different purposes, so unless you are sure which format your DDY file is, you may need to try a few different programs.
While we have not verified the app ourselves yet, our users have suggested a single DDY opener which you will find listed below.
Last updated: March 9, 2012
Suggest another file format using extension DDY
While we know of one file format using the .DDY file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .DDY file.
Various apps that use files with this extension
These apps are known to open certain types of DDY files. Remember, different programs may use DDY files for different purposes, so you may need to try out a few of them to be able to open your specific file.