Thanks for the URL.  Just a word of caution, the ODS model that has
the safety mode Oxygen Depletion Sensor (ODS) system, the manuf.
says: "ODS Model does not operate above 4500' feet elevation. "

Seemingly!, the 3 smaller models (the Olympian A) do not have this
ODS feature, (at least it is not commented upon on the Co's URLs),
but are  "Operational up to 14,000 feet elevation".

Just stirring the pot some more :-)    Malcolm S

> Let me stir this pot a little... US Catalytic (manufactures and sell
> Olympic Heaters) offers a "safety model" that has an oxygen
> depletion sensor system on it.  Couple this with good sense, a good
> CO sensor, the 300 dollars you saved, and it's seems like a pretty
> good deal.

> www.uscatalytic.com             later.    robyn