Forum Discussion

Dashonthedash's avatar
Jul 27, 2017

Carbon Monoxide detector

I have a Costar model 9-rv battery-operated CO detector that has gone bad after 6 1/2 years. I want to replace it, but they apparently don't make that model any more. What is my best bet to replace it with a new one that will not require any new holes or drilling in the ceiling?

15 Replies

  • Toddupton wrote:
    Is yours also a propane detector because that might also be important.


    No
  • COSTAR makes two models of detectors - the 9RV and 12RV-DB. the 12RV-DB is hard wired. I think the 9RV is the most current model. This is the one I have as it was a direct replacement for the prevvious model that came with my TT. It worked with the existing mounting plate, so I didn't have to drill new holes.

    HERE is their website - has links to manuals and customer support contact info. Yours might be under warranty.

    Did you read the fine print on the back of the detector and install a fresh battery? It usually beeps a couple times when you install a new battery.
  • Is yours also a propane detector because that might also be important.
  • What is needed is a dual chamber detector that will detect CO and smoke from a slow smoldering fire such as may start in a R/V because of electrical fires and fast burning smokeless fires. It will fit where your old one was.

    After a lot of research and talking to Kidde, they assured me that this one would work in a home and also A RV,there is no difference.

    This is what I found.
    A Kidde KN-COSM-XTR-BA Nighthawk
    That seemed to be best suited for this kind of application.

    Like This

    They now can be bought at Home Depot, also At Amazon.

    Home Depot

    Amazon

    I suggest you read all the info and make your decision on this but I replaced the ones in my Class C with this one.They are rated for 10 years
    and most are only rated for 5,If your RV is older than 5 years old and they haven't been changed they are most likely no good. Mine needed to be replaced so this was a good deal for me, I had a hard wired one and I chucked it for the battery powered ones, they can be checked before each trip by pushing the test button in the center of the unit.