---- Original message ----
>Date: Mon, 12 Jan 2004 21:52:09 -0700
>From: Bob Stevens <mtbiker62@HOTMAIL.COM>
>Subject: Re: Carbon Minoxide?
>To: vanagon@GERRY.VANAGON.COM
>
>My heater is an inside-the-van air eater and inside-the-van
exhauster. It
>eats the internal air and contaminates that environment with
potentially
>deadly gases.
>A feature of CO, it is heavier than air so drops to the floor
of the van,
>which is why the detector should be near the floor. Mine is
on the front
>

Carbon monoxide is slightly LESS dense than air; household
detectors are mounted near or on the ceiling.
  Carbon DIoxide is more dense than air.

Larry A.