Updated November 2026
Data from the official Airthings and Aranet sites.
2026 verdict
Remote radon alerts and a travel carbon dioxide meter solve different worries, and the Aranet4 HOME is the recommendation for the stuffy room.
It is the better reviewed of the two, with NDIR CO2, pressure, an e-ink screen and two AA batteries rated for 4 years. The Airthings 2989 View Radon is the Wi-Fi radon meter, with its own e-ink screen, six AA batteries for about 3 years or USB-C, a 5 year warranty, and Google Home plus Alexa on top of Home Assistant. It can hub other Airthings devices. It does not measure CO2. Choose the Aranet4 HOME for ventilation you can carry. Choose the Airthings 2989 View Radon for radon you can check away from home.
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The biggest differences
Where these two are furthest apart, and by how much.
- Warranty2.5×Airthings 2989 View Radon5 years vs 2 years
- Battery Life+33%Aranet4 HOME4 years vs 3 years
| Feature | Airthings 2989 View Radon | Aranet4 HOME | Winner |
|---|---|---|---|
| Price | $219.99 | $189.00 | Aranet4 HOME |
| Rating | 4.2 | 4.7 | Aranet4 HOME |
| Warranty | 5 years | 2 years | Airthings 2989 View Radon |
| Battery Life | 3 years | 4 years | Aranet4 HOME |
| Connectivity | 2.4 GHz WiFi, Bluetooth, Other | Bluetooth | Airthings 2989 View Radon |
| Integrations | Google Home, Alexa, Home Assistant | Home Assistant | Airthings 2989 View Radon |
| Sensors | Radon, Temperature, Humidity | CO2, Temperature, Humidity, Atmospheric Pressure | Aranet4 HOME |
| Local Control | NO | YES | Aranet4 HOME |
| Weather Resistance | NO | NO | Tie |
| Screen | YES | YES | Tie |
| Alerts | Temperature Alerts, Humidity Alerts, Air Quality Alerts, Low Battery Alerts | Temperature Alerts, Humidity Alerts, Air Quality Alerts, Low Battery Alerts | Tie |
What the differences mean
Radon on Wi-Fi versus CO2 in a pocket
The Airthings 2989 View Radon measures radon, temperature and humidity, and it stays on 2.4 GHz Wi-Fi. The Aranet4 HOME measures CO2, temperature, humidity and atmospheric pressure, over Bluetooth only. Remote radon alerts do not tell you the CO2 in a bedroom, and a travel CO2 meter does not tell you the radon in the basement.
Battery
The Aranet4 HOME is rated for 4 years on two AA batteries and has no wired option. The Airthings 2989 View Radon is rated for about 3 years on six AA batteries, and it can also run on USB-C. Fewer cells and a longer rating sit on the Aranet. The View can stay plugged in if you would rather not feed it batteries at all.
Platforms
The Airthings 2989 View Radon works with Google Home, Alexa and Home Assistant, and its SmartLink radio can hub other Airthings meters. The Aranet4 HOME lists Home Assistant only. Neither supports Apple HomeKit, SmartThings or Matter. A speaker that should announce the reading has to be pointed at the radon meter, and the announcement will not be CO2.
Warranty
The Airthings 2989 View Radon carries a 5 year warranty. The Aranet4 HOME carries 2 years. Both alert on temperature, humidity, air quality and a low battery, so the alert row does not separate them. The warranty and the Wi-Fi radio are the Airthings advantages that still do not change the gas.
Which one to buy if
- you want carbon dioxide you can carry from room to room
The Aranet4 HOME is the NDIR CO2 meter, with e-ink, pressure and about 4 years on two AA cells. It does not measure radon.
- radon alerts have to reach you when you are away
The Airthings 2989 View Radon measures radon over 2.4 GHz Wi-Fi, with an e-ink screen. The Aranet4 HOME has no Wi-Fi and no radon sensor.
- a voice assistant should see the radon meter
Both are on the Airthings 2989 View Radon. The Aranet4 HOME integrates with Home Assistant over Bluetooth and lists no voice assistant.
- other Airthings sensors need a hub in the house
The Airthings 2989 View Radon can act as a SmartLink hub. The Aranet4 HOME does not join that system, and it still will not measure radon.
$219.99
- + Warranty: 5 years
- + Connectivity: 2.4 GHz WiFi, Bluetooth, Other
- + Integrations: Google Home, Alexa, Home Assistant
- - Price: $219.99 vs $189.00
- - Rating: 4.2 vs 4.7
Winner
$189.00
- + Price: $189.00
- + Rating: 4.7
- + Battery Life: 4 years
- - Warranty: 2 years vs 5 years
- - Connectivity: Bluetooth vs 2.4 GHz WiFi, Bluetooth, Other
What owners say
Owners of both meters trust a continuous log more than a single mailed test, and both like an e-ink face they can read without burning a bright panel. Airthings 2989 View Radon owners talk about checking radon from anywhere, weekly email reports, and swings by room and weather, including a mitigation fan they caught because the number moved. A minority describe a dead reading or two units that disagreed, and support that felt scripted. Aranet4 HOME owners talk about CO2 close to reference instruments, years on AA cells, and taking the meter on a trip. They mention a few minutes to settle after moving and a humidity reading that can sit a little off.
Frequently Asked Questions
Which is better overall: Airthings 2989 View Radon or Aranet4 HOME?
The Aranet4 HOME wins the sheet on the review record, battery life and sensor count around CO2 and pressure. The Airthings 2989 View Radon is the Wi-Fi radon monitor, with a 5 year warranty and Google Home and Alexa. The badge does not make the Aranet a radon meter.
What is the biggest difference between the Airthings 2989 View Radon and the Aranet4 HOME?
Pollutant and network. The Airthings 2989 View Radon measures radon over Wi-Fi and can hub other Airthings devices. The Aranet4 HOME measures CO2 and pressure over Bluetooth, with a 4 year battery rating and Home Assistant only. Both have e-ink screens.
Does the Aranet4 HOME detect radon?
No. The Aranet4 HOME measures carbon dioxide, temperature, humidity and atmospheric pressure. Radon is the Airthings 2989 View Radon, which does not measure CO2. You need both if the house has both problems.
Does the Airthings 2989 View Radon measure carbon dioxide?
No. The Airthings 2989 View Radon measures radon, temperature and humidity. Carbon dioxide and pressure are on the Aranet4 HOME. Temperature and humidity are the overlap, and only the View adds Wi-Fi.
Who should buy the Airthings 2989 View Radon?
Someone who wants radon on an e-ink screen with Wi-Fi alerts, optional batteries or USB-C, and Google Home, Alexa or Home Assistant. It can also hub other Airthings meters. It will not track office CO2.
Who should buy the Aranet4 HOME?
Someone who wants a portable NDIR CO2 meter with pressure, e-ink and about 4 years on two AA batteries, used with Home Assistant. It is the wrong tool if the search was for the Airthings 2989 View Radon and soil gas.
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