- Boiler that runs off fuel
- Boiler that runs off electricity
- Heating pipes
I think this is something that should really be in the vanilla game. Maybe there could be two kinds of boilers, one that runs off burning wood and another that run off electricity. The piping could be connected to a boiler and then the pipes run inside the walls in a similar fashion like electricity wires do. I understand there are heaters already in game, but putting a heater inside every single room seems a little OTT when most buildings IRL have boilers and central heating.