Make a timer. I make timers with the Countdown app . Making the timer is stated in this topic, first post.
Make some flows:
WHEN windows closes THEN turn on Thermostat AND stop timer.
WHEN window opens THEN start timer for 300 seconds.
WHEN timer is empty THEN turn down thermostat.
This is just an example. U will get other comments with “i like the timers app more then the countdown app” and stuff like that. This is just to help u get started.
