turn off furnace/AC if doors/windows left open

I'm looking to create some sort of trigger that will automatically turn off my furnace/AC if any door or window is left open for > X minutes. Before I started down this road, I wanted to see if anyone else has written any sort of script for this or has ideas. Will I need to create a separate trigger for each door/window?

cheers,
J.

I have something similar (to activate trigger based on window state) but without considering time.
You do not need to create a trigger for each window; you can use a Virtual Device, that is, you "group" together all the devices (windows) you need and set the VD to be ON when at least one device (window) is ON.

Idea could be: when the window is opened, a timer is started, when the timer expires, it fires the trigger to shutdown the furnace

2 triggers; a trigger to turn off the furnace (with suitable delay) when the window opens, and a second which deletes the delayed actions of the first when the window closes...