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CO Alarm
Getting ready for a trip with the grandkids...and of course this is when the CO alarm is shrieking it’s at the end of its life.  It appears I can’t find an exact replacement for the Costar Model 9 RV...any suggestions?

Thanks,

Bill
2013 31' Silver Twin Bed
Semi-retired 6/21....
Re: CO Alarm
Reply #1 –
First, the replacement need not be exact.  If the "footprint" is sufficient to hide any screw holes, etc., on the ceiling, that will work.  Second, a Google search for Costar Model 9 RV resulted in a number of circular units.  I suggest measuring the diameter of the old one, then order a new one of that diameter on line.  Installation is easy.

Ken F in WY
'08 MB
 
Re: CO Alarm
Reply #2 –
I installed a combination CO and propane alarm.  Put it right under the sink because CO and propane drop, they dont rise.  Still have smoke detector in bedroom as well.
Re: CO Alarm
Reply #3 –
Hi Parussky; CO2 is slightly heavier than air, CO (carbon monoxide) is slightly lighter than air. Both mix so well, that it doesn't matter much.  CO is produced by incomplete combustion, usually stove top cooking or oven.  So it might be warm, and will rise. If the coach door is open, exhaust can enter from other sources, like another motorhome engine exhaust.
       In the LD, the holes for the CO monitor were up high, and as Ken said, it was easier to put another one there, than patch the holes.  I had a spare for my house with the readout, so I used that one.
      When I cook now, I open the ceiling vent just a crack (if it's cold outside). Years ago I had a food particle on a burner, and under the pan it wasn't noticeable that the flame wasn't completely lit. The CO alarm went off just before the LP gas alarm did. About 30 seconds apart. I did like that the two alarms weren't together, so I could tell them apart by location. Better to know which problem is alarming. Good thing the three cats weren't on that trip!          RonB
 
RonB (Bostick) living in San Diego
Original owner of "Bluebelle" a '99 TKB
Re: CO Alarm
Reply #4 –
Quote from: parussky  - 
I installed a combination CO and propane alarm.  Put it right under the sink because CO and propane drop, they dont rise.  Still have smoke detector in bedroom as well.
Typically, propane detectors are near the floor, no more than 12" from it. I suggest you recheck the new unit's instructions, to ensure your much higher mounting location is allowed.
2005 Jayco 24SS