[Eaker]

Oxygen is rarely depleted in a home. We have never run out of it in our home. If it is the fire goes out. If the oxygen is too depleted, propane or not, you will die anyway.

As I stated and it cannot be refuted millions of homes run on propane.

[steve86]

I witnessed a test case of oxygen depletion in a 8 X 14 room. The CO sensor did sound and occupants probably would have evacuated safely. The flame was still burning but changed color. Many people have died using an outdoor appliance (or even indoor appliance with oxygen depletion) in rooms such as bathrooms. This is why use of unvented heaters is prohibited in those rooms by universal building codes. You are making an irresponsible comment by implying oxygen depletion is not an issue. Maybe you live in an old, drafty house. Newer houses are much tighter.