Originally Posted by Boot
The Big Buddy has a low oxygen shutoff, so it should theoretically shut down before it has the opportunity to cause a problem.
The low oxygen shutoff does work well. However, be aware that it will not allow the heater to operate at altitudes above 5,000 to 6,000 feet. The Olympian Wave series of catalytic heaters from Camco will operate at high altitude.
Both brands require that you keep a window or vent cracked open.
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