[Shop-talk] Using gas indoors

[Randall]

> Virtually no house is so air tight that it will not draft 
> adequately for a 
> clean burning appliance.  The ability of the oxygen level in 
> the house to go 
> down far enough to cause poor combustion is almost an 
> impossibility.

So much so that all gas heaters made since 1982 are required to incorporate
an oxygen depletion sensor in the safety valve.
http://www.cpsc.gov/CPSCPUB/PUBS/452.html

Randall