When I used to control my Frierdrich AC through its own google home integration, that command worked fine. When I moved fully to HA and purchased Nabu Casa and enabled its Google Assistant integration, this command no longer works.
The workaround I’ve discovered is to do it in 2 steps:
(1) first turn on the device, eg “Hey Google, turn on X”
(2) then do “Hey google, turn off X in 1 hour”
Then it works fine.
I assume the issue is on the Nabu Casa google assistant integration side.
This would be a fantastic feature to add to bring parity with other google assistant integrations. Thank you.