At 09:04 PM 2/4/2009, chris and/or ruth wrote:
>It's not the low Oxygen that will kill ya, it's the Carbon Monoxide.
>That Mr Buddy is

That sensor isn't for you, it's to make sure that the heater has
enough oxygen to burn clean and keep its CO output in spec.

So the critical statistic to be looking for would be deaths from
propane heaters with low-oxygen shutoffs.

Just as a reminder, the total US yearly deaths from "non-intentional,
non-fire" CO is in the range of 200, about half from heating
appliances of all sorts.

--
David Beierl - Providence RI USA -- http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage," '85 GL "Poor Relation"