Quote:
Originally Posted by captboxcar
If you have all electric utilities there’s no need for CO detectors.Ten years is the life expectancy for smoke detectors and combination CO/smoke detectors Is 5 to 7 years. That does not mean that they can’t malfunction prior to those times.The detectors are interconnected which means if one gets activated they all will go into alarm. Most hard wired ( supplied by house current) will have a battery back in case of a power failure. A good rule of thumb is to change the battery on every daylight savings to ensure a reliable back up. If battery gets low it will been intermittently continuously for approximately 7 days. Detectors powered by lithium batteries are rated for ten years and are usually sealed units with no option to replace.But as stated earlier detectors should be replaced at 10 years regardless.There are also detectors run by battery only that are wirelessly interconnected to avoid having to run wires through walls and ceilings.
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The building code requires a CO detector if it has an attached garage. That is why most all electric houses in The Villages have them.
The building code also requires a sealed 10-year detector to be used if you install it as a stand alone unit that is not connected to the house wiring. But, you can use lithium 9 volt batteries in any detector that is hard wired without using a sealed detector.