Carbon Monoxide alarms should be placed on each level of the home (MD law). Best practice is to interconnect all CO alarms (neither of these installations is included in your graphic). Waiting for Carbon Monoxide to reach the alarm outside the sleeping areas may be too late. In a forced air HVAC system CO and smoke will spread rapidly to each room when the air handler operates.
Laws in MD do not require CO alarm interconnection. Not a good practice.
Missing the requirements for smoke alarms outside sleeping areas or any mention of clearance from ceiling fans and supply registers.
Some areas only require one CO alarm, not out outside every sleeping area.
Agree.
Minnesota requires smoke in BOTH areas… inside and outside of Bedrooms/Areas suitable for sleeping!
It doesn’t sound like there could be any one graphic that would satisfy all of the various state requirements.
Well, but it’s region specific:
Doesn’t matter; we inspect to best practice not codes.
Graphic does not show elevation. At a bare minimum the last bullet point:
should be changed to read - Interconnected combination smoke-/carbon monoxide alarms on each level of the home are best practice.
That image is kind of “busy” relative to the information it actually conveys. I feel like I’ve seen better graphics on the folded up instructions crammed in with a smoke alarm.
Image and text updated: Smoke and Carbon Monoxide Alarm Location Requirements - Inspection Gallery - InterNACHI®
Would be less confusing without the dashed interconnections shown. It is already stated about the interconnect in the key.