Logitech Harmony update
File type: Configuration file
A hcu file extension is associated with the Logitech Harmony, a universal remote controller. A hcu file stores update.
Found 2 different file type records with the same hcu filename suffix.
File type category:
Configuration file
Date updated: August 20, 2019
Record marked as obsolete and not updated for a long time.
The hcu file extension is related to Harmony universal remote controller range of products from Logitech.
The hcu file contains some configuration data used by the device.
Most likely some old format without support. No further information could be found.
File type category:
Miscellaneous file
Date updated: September 27, 2026
HydroCAD is Microsoft Windows software for stormwater drainage design and hydrologic modeling. An HCU file stores definitions for the hydrograph units that HydroCAD uses when working with model data and calculations.
The file belongs to HydroCAD's supporting data and configuration files. Its contents are intended to be interpreted by HydroCAD, and the file is not normally edited as a general-purpose text or document file.
Open an HCU file through HydroCAD on Microsoft Windows. If the file is associated with a HydroCAD project or installation, place it where HydroCAD expects its supporting files and use the program's relevant project or unit-definition controls to load it.
Opening the file in a text editor is unlikely to provide a useful representation and may damage the definitions if the file is saved.
An HCU file contains definitions used by HydroCAD and is handled within the program rather than converted as a standalone document.
To change the definitions, use HydroCAD's own unit or project settings and save the resulting data in the form supported by the program.
Software applications that handle other tasks involving hcu files:
Microsoft Windows
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