Quote:
Originally Posted by Tired of Waiting
FLL
Never install the Co detector up high, ceiling. Co is heavy and settles in low areas.
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Installation varies by the manufacturer, but CO is not heavy. It's slightly lighter than air. If anything it may be contained higher up in the room in warmer air coming from combustion appliances like heating equipment. If the CO mixes with the warmer air it can and will rise with it.
Propane is a heavy gas that will sink low and find pockets.
I'd just follow the manufacturers recommended placement.
I do agree with ToW about paying a bit more and not using the combos.