So my Navien tankless water heater has an option for adding a "hot button" which can be wired to activate the recirculation mode. Hot Button
There is a youtube video showing a man buying a radio remote with 12V signal and wiring it to the unit.
So I'm wondering if I could find a Hubitat compatible 12V smart switch and then combine it with a Pico remote and/or motion sensor to turn on the hot water recirculation mode on demand.
I'm a total newbie, but this is the kind of thing I think would make my reluctant wife sign on.