How quickly do crew suffocate without oxygen?

I applied science with the following result:

It takes 15 seconds for a 100 HP crewmember entering a low oxygen room or a room running out of oxygen to die. This means they lose health at a rate of 6.67 HP/s. This rate appears to be constant across all races, meaning

  • Rockmen get killed after 22.5 seconds
  • Humans, Mantis, Engi, Slugs get killed after 15 seconds
  • Zoltans after 10.5 seconds.

4 Humans, 2 Engi, a Rockman and a Mantis were killed performing this experiment.


Asphyxiation does as much damage as a level 1 med-bay heals. More importantly, a level 1 teleporter will not recharge before most crew members will die (not sure about rockmen or crystalmen). A level 2 teleporter will recharge before a 100 hp crew member dies (not sure about a zoltan).


Crystal crew will have 60 health left when the level 1 teleporter is back online.


Crystal crew will still have 60 health left when the level 1 teleporter is back online when entering an oxygen depleted room.