High-Heat Furnace Control

🟦 Facts

Tap the temperature face in the lower-left of the world map or base view.
Read Location’s final temp; this is the temperature that determines whether the base remains safe.
Reaching -20°C or lower starts a five-minute freezing countdown.

Turn Auto-turn Furnace during a Blizzard ON.
Leave Auto-turn Overdrive during a Blizzard OFF.
Watch Location’s final temp during the Blizzard and turn on normal furnace heat if it is falling toward -20°C.
Use Overdrive only when normal furnace heat is not enough to keep Location’s final temp above -20°C.
In normal weather, leave the personal furnace OFF whenever Location’s final temp remains safely above -20°C.
Check the incoming Blizzard temperature before it arrives so you know whether normal furnace heat is likely to be needed.
After the Blizzard, turn the furnace OFF again once the base is safe.

Do not assume every Blizzard requires Overdrive; unnecessary Overdrive wastes coal. Do not intentionally hold a base at 50°C or higher, because that is the current burning threshold.

the game defines -20°C or lower as the freezing threshold and 50°C or higher as the burning threshold.
A frozen base thaws when the temperature is above -20°C at the end of the thaw countdown.