132
Airgradient: First air quality monitor to be officially compatible with Home Assistant
(www.notebookcheck.net)
this post was submitted on 07 Sep 2025
132 points (96.5% liked)
homeassistant
16229 readers
3 users here now
Home Assistant is open source home automation that puts local control and privacy first.
Powered by a worldwide community of tinkerers and DIY enthusiasts.
Home Assistant can be self-installed on ProxMox, Raspberry Pi, or even purchased pre-installed: Home Assistant: Installation
Discussion of Home-Assistant adjacent topics is absolutely fine, within reason.
If you're not sure, DM @GreatAlbatross@feddit.uk
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
The problem with the combo ones is that CO is heavy and goes the the ground and smoke rises with heat. So CO alarms should be low and smoke alarms high.
I've quickly skimmed 3 articles on the subject just now, and the consensus is it just mixes evenly with air. It'll naturally be more concentrated near the source, but there's tons of air flow in a house especially when the heat is on. One article even said CO is lighter than air (bit not enough to separate and rise on its own).
I was a little skeptical and just looked at NFPA codes (USA) and they don't seem to care about placement elevation, only type of rooms and heating sources. I didn't read all 68 pages, only what seemed relevant, so maybe I missed some discussion.