The Big Buddy has an O2 sensor / shut off. Unless you really are sealed off w/out ANY outside airflow from other rooms, the O2 issue is ALMOST non-existent .
Back east we had such a draft no matter what we did, short of redoing the wall and roof , there was always air movement within the house. Back then we used a large passive kerosun heater during winter months. Having a guy with access to kero our cost was minimalduring colder months.
Everyone should have the detectors already in place.
The Great Kazoo's Feedback
"when you're happy you enjoy the melody but, when you're broken you understand the lyrics".
My Feedback
"When law and morality contradict each other, the citizen has the cruel alternative of either losing his moral sense or losing his respect for the law." -Frederic Bastiat
"I am a conservative. Quite possibly I am on the losing side; often I think so. Yet, out of a curious perversity I had rather lose with Socrates, let us say, than win with Lenin."
― Russell Kirk, Author of The Conservative Mind
The Great Kazoo's Feedback
"when you're happy you enjoy the melody but, when you're broken you understand the lyrics".