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I strongly recommend the Aranet4 Home for personal/home use. Very accurate, very long-lasting, tells you other things like humidity etc, and only 1-2 hundred do

I strongly recommend the Aranet4 Home for personal/home use. Very accurate, very long-lasting, tells you other things like humidity etc, and only 1-2 hundred dollars when we bought it (may be more expensive now, been a couple years of inflation).

SparkyMcUnicorn 2y ago
I chose the AirGradient[0] One. It's slightly more expensive than the aranet4, but has more sensors. It's open source, reports CO2, PM10, PM2.5, temperature, humidity, and more I'm probably forgetting offhand. Loaded it with the esphome firmware, so Home assistant integration is seamless. And since it's open source, when a sensor inevitably wears out in a couple years (like the PMS5003), I can just replace the sensor instead of of buying a whole new unit. Highly recommend it. [0] https://www.airgradient.com/ https://www.airgradient.com/ Edit: I completely missed that AirGradient blog article
- lucubratory 2y ago
  That sounds fantastic, I really love open source stuff.
jval43 2y ago
It's crazy how optimized the Aranet 4 Home is. It runs on AA batteries for a whole year, no need to plug it in. That's unique in the space, and a case where e-ink makes a real difference. And very convenient in practice.
- teekert 2y ago
  Also love my aranet4. Would be killer if there was a zigbee version to couple to home assistant. I’d put one in every room if that was the case.
  - throwaranay4933 2y ago
    If your Home Assistant has Bluetooth, and the Aranet4 has the "smart home" integration enabled (via the app settings), then HA will pick up ambient broadcasts of the sensors out of the box. You don't need Zigbee or explicit pairing.
    - teekert 2y ago
      But I don’t have a large enough BT “network”, my zigbee networks spans my house (and entire premise).
ctenb 2y ago
I bought one a year ago for 200 bucks. I'm still happy with the purchase, and I haven't had to change the batteries yet.

SparkyMcUnicorn 2y ago

I chose the AirGradient[0] One. It's slightly more expensive than the aranet4, but has more sensors. It's open source, reports CO2, PM10, PM2.5, temperature, humidity, and more I'm probably forgetting offhand. Loaded it with the esphome firmware, so Home assistant integration is seamless. And since it's open source, when a sensor inevitably wears out in a couple years (like the PMS5003), I can just replace the sensor instead of of buying a whole new unit. Highly recommend it. [0] https://www.airgradient.com/ https://www.airgradient.com/ Edit: I completely missed that AirGradient blog article

lucubratory 2y ago
That sounds fantastic, I really love open source stuff.

jval43 2y ago

It's crazy how optimized the Aranet 4 Home is. It runs on AA batteries for a whole year, no need to plug it in. That's unique in the space, and a case where e-ink makes a real difference. And very convenient in practice.

teekert 2y ago
Also love my aranet4. Would be killer if there was a zigbee version to couple to home assistant. I’d put one in every room if that was the case.
- throwaranay4933 2y ago
  If your Home Assistant has Bluetooth, and the Aranet4 has the "smart home" integration enabled (via the app settings), then HA will pick up ambient broadcasts of the sensors out of the box. You don't need Zigbee or explicit pairing.
  - teekert 2y ago
    But I don’t have a large enough BT “network”, my zigbee networks spans my house (and entire premise).

ctenb 2y ago

I bought one a year ago for 200 bucks. I'm still happy with the purchase, and I haven't had to change the batteries yet.