Q. If I can’t find a Goy can I put a small bag of ice on the thermostat and eventually it will turn itself off?

A. Horav Shlomo Miller’s Shlit’a opinion is that it is preferable to ask a child to place the bag of ice cubes when in need, or to do it with a shinui.

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit”a.