[hide] Basically the vent is to release heat, furnace to add it, then the wheel for power and the thing (not sure) to let power go keep these at GREEN at all times. Then it'll say what you need to make and what you have currently, you have to match it up with the ingredients it gives you in top right, so say if it was water to the red moss look alikes you have to add the green ectoey thing :P[/hide]