Heat control is definitely the toughest boss of the game. Satisfying as fuck to be constantly pumping in cool O2 into the main colony block though once you get a handle on it. The steam turbine aqua tuner loop is key to fully nailing mid to late game temperature control, and needs to be implemented later on to actually get liquid hydrogen and liquid oxygen.

You can easily go hundreds of cycles though without needing a steam turbine as long as you are properly planning your base. There are a lot of aspects though that need to be considered. Most of which boil down to (heh) just not building your temperature sensitive things next to hot or heat producing things.

One neat trick is to create a vacuum with liquid locks on either side so that heat is not conducted from one side to another. Another more basic trick is finding a cold biome or cool salt water geyser and pumping liquid through it then insulating the pipe ( p-water best because it’s high specific heat capacity and low freezing temperature) and then running it through your base with some radiant/normal piping at picked spots to release that coolness.

The two focuses you need before you get to creating coolness are to try not to let heat in from outside (don’t dig into hot biomes without insulated tile or liquid locks) and try not to unnecessarily generate heat on the inside of your colony block. You also want to try to just largerly separate where your plants are from where your cooking/machines are until you can actively control the heat generated.

Even without a steam turbine room you can just plop down an aqua tuner next to a pool of water outside your base and radiate that now cool water into the base for quite awhile before the system would break down.

Hope that helps!

Oxygen not included. I spent so much brain beating that game, then wanted to play more.

What makes you disagree lmao.