Written by Andrew Hammel

browe all RimWorld To manage gravship temperature in RimWorld Odyssey, utilize heaters, coolers, and sealed compartments. Keeping your colonists alive means maintaining heat balance, avoiding vacuum exposure, and safely storing food. This guide breaks down how ship temperatures function and how to create stable environments whether you're in space or on a planet.

Understanding Ship Temperature

Vacuum impacts everything

Gravships lack natural insulation. Once you reach orbit, any room not enclosed with Gravship Hull walls will be exposed to the void of space. That results in immediate vacuum conditions and no breathable air. Colonists caught in unsealed areas will either freeze or suffocate unless equipped properly.

When traveling across a planet’s surface, your ship won’t face vacuum exposure. Airtight rooms are only essential when preparing for launch into space.

Heaters and coolers remain effective

Standard heating and cooling units operate normally. They can adjust room temperature as long as the space is sealed and has power. There's no need for special equipment specifically for ships.

Maintaining a consistent power supply is key, especially in colder biomes or when running hydroponics, medical beds, or freezers.

Setting Up a Reliable Temperature System

Use Gravship Hull walls

Only Gravship Hull walls offer true airtight protection. These should enclose any area where you want to maintain warmth or cold while in orbit. Regular walls cannot block out vacuum conditions. Avoid using windows and unsealed doors before launching into space.

Install heaters in living spaces

Every major room used by colonists should have at least one heater. Areas like sleeping quarters, medical zones, and dining halls must stay between 18°C and 22°C to ensure comfort and prevent hypothermia or negative effects.

Construct a freezer compartment

Position a cooler so that its red (hot) side faces into space. The cold side should be inside a small, sealed room. Set the cooler to -2°C or lower to maintain a functional freezer, whether in orbit or on land.

Coolers release heat directly into the vacuum without needing an extra venting space. Just make sure they’re powered and attached to an outer wall.

Control door movement

Each time a door opens, it risks a sudden shift in temperature. Use autodoors to minimize open duration or install double-door airlocks for greater control. This helps preserve conditions in critical areas like freezers, heated bedrooms, and hydroponic bays.

Handling Heat in Specific Zones

Hydroponics

Hydroponic basins perform best between 10°C and 30°C. If your ship gets too cold, plant growth slows or halts. Equip each hydroponics bay with at least one heater and enclose it using Hull walls.

Medical areas

Colonists heal faster in warm settings. Maintain a steady 21°C in medical bays with a heater. Cold medbeds reduce recovery speed and increase infection risk.

Freezer storage

Freezer compartments must be sealed. Constant foot traffic or open doors will raise internal temperatures. Add more coolers if necessary, and restrict access using stockpile zones or timed schedules.

Final Thoughts

In RimWorld Odyssey, managing gravship temperature is crucial for survival. Whether navigating across a planet or flying through space, always seal your rooms, keep heaters and coolers powered, and monitor the climate closely. Your colonists may not complain—until they're frozen solid.

FAQ

Q: Do heaters and coolers work in orbit?

Yes, provided the room is sealed with Gravship Hull walls and has a power source.

Q: What happens if a room isn't sealed in space?

It loses pressure and drops to vacuum-level temperatures. Colonists can die quickly under these conditions.

Q: How do I expel heat into space?

Mount a cooler with the hot side facing space. It will release heat immediately.

Q: Are sealed rooms required on planets?

No. Vacuum conditions only occur in space. Launching from a planet doesn't require airtight compartments.

Q: What temperature should living areas be kept at?

Aim for between 18°C and 22°C. Heaters will automatically regulate within this range if configured correctly.

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