Written by Alec Blackwood

Oxygen Pumps in RimWorld Odyssey allow you to supply enclosed areas of your gravship with breathable air. Without them, your colonists will suffocate in a vacuum unless they are wearing vacsuits.

How Oxygen Pumps Function

To unlock Oxygen Pumps, you must first research Orbital Tech. Once available, these pumps can generate breathable air inside fully sealed rooms. For them to work properly, the space must be completely surrounded by walls and closed doors with no exposure to the vacuum of space.

Whenever you want your pawns to safely take off their vacsuits while in space, such as in sleeping quarters, medical zones, or workstations within your gravship, you’ll need these pumps.

Each pump has a limited coverage area. Bigger rooms may require multiple units to maintain an oxygenated environment.

Using Oxygen Pumps

1. Unlock Orbital Tech
   This grants access to Oxygen Pumps, vacsuits, and vac barriers.
2. Construct a Fully Sealed Room
   Use gravship walls and closed doors—no gaps or openings allowed. Any leak will stop the pump from functioning.
3. Install the Oxygen Pump Inside
   When connected to power, it will begin filling the room with breathable air. The vacuum warning will disappear once active.
4. Ensure Continuous Power Supply
   If the power fails, the pump shuts down and the room is instantly exposed to space vacuum.
5. Optional: Add Vacsuit Lockers
   Place them near the entrance so colonists can remove suits after entering the safe zone.

Air does not flow between rooms. Each sealed section needs its own pump.

Importance of Oxygen Pumps

If pawns remain in vacsuits for extended periods, they will experience heat exhaustion, slower movement, and performance penalties. Oxygen Pumps allow your crew to move freely and comfortably inside your ship without needing to wear bulky suits indoors.

For hospitals, bedrooms, and most functional spaces, breathable air is essential. Without a working pump and proper seal, those areas become lethal environments.

Final Thoughts

Oxygen Pumps are essential for long-term survival in space during your RimWorld Odyssey. Prioritize researching Orbital Tech early, ensure tight seals on all rooms, and keep your crew alive. No oxygen means no survivors.

FAQ

Q: How do I get Oxygen Pumps?

By completing the Orbital Tech research.

Q: Do they function in rooms with leaks or open edges?

No. Rooms must be completely sealed for the pump to work.

Q: Is power required for Oxygen Pumps?

Yes. A loss of power results in immediate decompression.

Q: Must each room have its own pump?

Yes. Oxygen does not pass through walls or into adjacent rooms.

Q: What happens if a room lacks a pump?

Colonists who remove their vacsuits will die from suffocation.

Q: Are Oxygen Pumps useful on planetary surfaces?

No. They are only needed in space where vacuum conditions exist.

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