ThermoStones

Magical ThermoStones that heat or cool a room toward a target temperature you choose - no wiring needed by default.

Unlock both stones with a single cheap early-game research (thermostones), then build them under Architect - Temperature:

- Heating Thermostone: warms its room toward a target (default 80 C / 176 F).
- Cooling Thermostone: chills its room toward a target (default -40 C / -40 F).

Select a placed stone to set its target with icon gizmos (-10, -1, +1, +10, Reset) plus a per-type extreme button - Hell max for heaters and Deep freeze for coolers. Targets always display in both Fahrenheit and Celsius.

Category-tabbed mod settings (General, Targets, Power, Effects, Presets) let you tune default targets, the allowed range (all the way to a hellish +10000 F or a frozen -10000 F), heat/cold push strength, an optional roofed-room requirement, an optional electricity requirement (off by default; set a watt draw when on), the magical aura FX, and a small "impressed" mood memory colonists get when they see an active stone. A one-click "Hell and frozen hell" preset is included.

No Harmony or DLC required. Open source - Source, solution, and project files are included.