The Ancient Furnace costs 100 Coralum Ingot to place, more than any other material it needs, and is unlocked by the Ancient Furnace technology at level 66.

Build cost

Unlocked by Ancient Furnace.

Coralum Ingot

Material

Needed: ×100

×100

Thermal Core

Material

Needed: ×20

×20

Computer

Material

Needed: ×30

×30

Ancient Civilization Core

Material

Needed: ×10

×10

Workers

Game data

Exact values extracted from Palworld's game files.

Source: DT_MapObjectAssignData
Build: 4570874460
Confidence: exact

How paldb sources its data

Ancient Furnace needs Kindling at level 6 or above and Cooling at level 6 or above — all of them, not any one of them.

Working it costs a Pal -0.15 sanity per cycle, which is why a base running hot needs food and beds more than it needs more workers.

Plan a base to total these across every structure you place, then build the team that covers them.

Other refine structures

Nearest to it by build cost in the same category: Primitive Furnace (63), Electric Furnace (84), Improved Furnace (150) and Gigantic Furnace (462). Every structure the game ships is on the buildings list.

Extracted from Palworld's game files on 7 September 2026 (build 4570874460).Methodology