on a nighthawk detector what numbers are considered unsafe?

We have a Nighthawk carbon monoxide detector in our home. The number 8 just recently appeared on the screen. Should we be concerned? No alarm has gone off.

I just installed one of those the other day and I would have sworn that 8 was an error code that I got and that you just have to unplug the detector and plug it back in. But I just looked at the manual online and there is no mention of 8 being an error code. It does display “888″ for a few seconds when you fist plug it in.

If it is steadily displaying an 8 then that is the level of carbon monoxide that it has detected since last reset. On the one hand that is a very low level and is safe – some references put the maximum continuous exposure level at 35 ppm and some say 50 ppm. Either way, 8 ppm is very low.

But then you have to wonder where the 8 ppm came from and if it is from a leak than may get worse over time. Having a CO detector is a good thing, it will make plenty of noise if the levels ever get to the point that you need to take action.

You could call Kidde at 800-880-6788 and talk to them if you want some reassurance.

NightHawk CO Alarm

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