Struggling to connect Moen Flo Shutoff Valve (not the sump pump monitor, the shutoff valve)

Third party integrations
1

The problem:

I have a Moen Flo Smart Water Shutoff Valve that I’d like to integrate with Home Assistant. The existing Flo integration requires an account with the original “Flo by Moen” app — but that app is no longer accepting new users. Moen has migrated everything to the newer Moen Smart Water Network app, which is where my device lives and works fine.

The Flo integration authenticates against the old Flo API, so there’s no way to use it if you only have a Moen Smart Water Network account.

I also tried routing this through Google Home (since the Moen Smart Water Network app supports GH linking), but the Google Home integration in HA similarly requires credentials for the old Flo app on the backend — so that’s a dead end too.

What I’m looking for:

  1. Has anyone solved this? Is there a custom integration, HACS component, or workaround that talks to the Moen Smart Water Network API instead of the legacy Flo API?

  2. If not, where would someone start? Has anyone sniffed the Moen Smart Water Network API traffic or found documentation for it? I’m comfortable writing code — I just would welcome any advice because I’ve never built my own HC integration before.

2

Is there an open (or closed) issue for this?
There is a link to issues in the link you posted above.

3

I have an existing flo shutoff on the old app but it keeps telling me to convert to the smart water network. It sounds like that will break my HA. I haven’t seen any comments on a working integration for the new smart water network and shutoff valve.

4

There doesn’t seem to be.

I didn’t log this as an issue with the existing Flo integration because I assumed, since the Flo app has been phased out, that an entirely new integration would be created rather than updating the existing one.

But, perhaps that wasn’t the way to go!