HA 2025.8.0 - Energy Dashboard – Water usage unit suddenly in m3?

Energy
1

I just found out that the water usage unit on the Energy Dashboard is changed, probably since installing HA 2025.8.0 It now is in m3:

HA_water_m3_20250810
HA_water_m3_20250810425×383 21.4 KB

HA_water_graph_m3_20250810
HA_water_graph_m3_20250810614×442 7.67 KB

This has always been in Liter:

HA_water_liter_20250803
HA_water_liter_20250803422×377 21.1 KB

HA_water_graph_liter_20250810
HA_water_graph_liter_20250810588×442 4.12 KB

This is really a step backwards as it is less accurate this way, especially with only two decimals. The resolution is +/- 10 Liter like this.
Is anybody seeing the same?

The input for my water usage is a sensor providing the total usage in m3, but with three decimals, so a resolution of +/- 1 Liter.
This has always been correctly converted to Liters up to now.

Why is this changed?
Is it intentional, or could it be a bug?

2

Check the release topic for a method to set it to what you want.

3

Thanks Tom, found it.

I already went through the Release notes, and initially could not find anything related to this.
But now I did again scan through it, and finally found it:
In the 2025.8: The summer of AI release notes there is a link to the Full changelog for Home Assistant 2025.8 which has a link to Update frontend to 20250806.0 #150106 which has a link to 20250806.0 which finally points to this: Render energy-water in the display unit of the sources #26141

No wonder it is so difficult to find…

Anyway, so the solution is to replace the input sensor for one that provides the water usage in Liters instead of in m3.
In itself this is not a big problem to do, but what happens with all the built up history when I swap these sensors in the Energy Dashboard?

4

The

In the forum. Not the release notes blog post.

That’s not what I remember reading. Just change the unit in the frontend. See: 2025.8: The summer of AI ☀️ - #128 by zigomatic

2 Likes
5

Thanks!
That indeed is the solution :grinning: