DayZ field wiki · Survive
Heat
Buffer, not a camp
Short answer
The arrows are not decoration. Heat packs, layers, fire. Standing still in a blizzard is how Sakhal wins.
Also: heat · cold meter
How it works
Heat comfort is a meter. Holes in the kit dump it. Vehicles are not a reliable radiator on official — old guides lie.
What to do
Layers, a stove, keep moving on snow maps.
Don't
Don't treat a campfire as a house.