Updated November 2026
Data from the official Airthings site.
2026 verdict
Radon read on the spot or radon read from anywhere?
For most homes the Airthings 325 Corentium Home 2 is the better buy of these two radon monitors, measuring the same things in a smaller, newer body. Both track radon, temperature and humidity, both have a screen, both last up to 3 years on AA batteries and both carry a 5-year warranty, with the same Google Home, Alexa and Home Assistant support. What the Airthings 2989 View Radon adds is Wi-Fi: it sends alerts and weekly reports wherever you are, while the Airthings 325 Corentium Home 2 is Bluetooth only and syncs when you are nearby. The Airthings 2989 View Radon also takes USB-C power and is the pricier of the two. Choose the Airthings 325 Corentium Home 2 to keep an eye on radon at home, and the Airthings 2989 View Radon if you need to watch a basement or a rental from afar.
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| Feature | Airthings 2989 View Radon | Airthings 325 Corentium Home 2 | Winner |
|---|---|---|---|
| Price | $219.99 | $179.97 | Airthings 325 Corentium Home 2 |
| Rating | 4.2 | 4.4 | Airthings 325 Corentium Home 2 |
| Connectivity | 2.4 GHz WiFi, Bluetooth, Other | Bluetooth, Other | Airthings 2989 View Radon |
| Local Control | NO | YES | Airthings 325 Corentium Home 2 |
| Warranty | 5 years | 5 years | Tie |
| Weather Resistance | NO | NO | Tie |
| Battery Life | 3 years | 3 years | Tie |
| Screen | YES | YES | Tie |
| Integrations | Google Home, Alexa, Home Assistant | Google Home, Alexa, Home Assistant | Tie |
| Sensors | Radon, Temperature, Humidity | Radon, Temperature, Humidity | 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
Remote monitoring
The Airthings 2989 View Radon connects over Wi-Fi, so you get alerts and weekly reports away from home. The Airthings 325 Corentium Home 2 is Bluetooth only: you read it in the app when you are within range.
Power
Both are rated for up to 3 years on batteries, but the Airthings 2989 View Radon uses six AA cells and can also run from USB-C, while the Airthings 325 Corentium Home 2 uses two AA cells and has no wired option.
Size
At 113 x 61 x 29 mm the Airthings 325 Corentium Home 2 is the compact one, easy to move from room to room. The Airthings 2989 View Radon, at 170 x 33 x 90 mm, is shaped to sit on a shelf or hang on a wall.
Screen
The Airthings 2989 View Radon uses E-Ink and the Airthings 325 Corentium Home 2 an LCD. Both show radon on the device without opening an app, so this is not a difference you would choose on.
Which one to buy if
- you check radon while you are at home
The Airthings 325 Corentium Home 2 measures the same things with the same battery life, warranty and integrations, and costs less.
- the monitor sits in a rental, a cabin or a basement you rarely visit
Only the Airthings 2989 View Radon is on Wi-Fi, so its alerts reach you anywhere.
- you want to test room by room
The small, two-AA Airthings 325 Corentium Home 2 is the easier one to carry around the house.
- you would rather never change batteries
The Airthings 2989 View Radon can stay plugged in over USB-C.
$219.99
- + Connectivity: 2.4 GHz WiFi, Bluetooth, Other
- - Price: $219.99 vs $179.97
- - Rating: 4.2 vs 4.4
Winner
$179.97
- + Price: $179.97
- + Rating: 4.4
- + Local Control: YES
- - Connectivity: Bluetooth, Other vs 2.4 GHz WiFi, Bluetooth, Other
What owners say
Owners of both Airthings radon monitors describe the same payoff: continuous data that shows radon rising and falling with weather, season and ventilation, and a way to check that a mitigation system works. Both groups also mention a couple of units disagreeing with a second meter, and suggest a lab test once. Airthings 325 Corentium Home 2 owners single out effortless pairing, a build that feels a step above a basic detector and Good/Fair/Poor readouts anyone can act on, and their one recurring wish is Wi-Fi. Airthings 2989 View Radon owners value exactly that remote access, with alerts and weekly emails, and credit it with catching a failed mitigation fan, while complaining about the occasional defective unit and Airthings support that is fast for some and scripted for others.
Frequently Asked Questions
Which is better overall: Airthings 2989 View Radon or Airthings 325 Corentium Home 2?
The Airthings 325 Corentium Home 2 for most buyers. It measures radon, temperature and humidity like the Airthings 2989 View Radon, with a screen, up to 3 years of battery life and a 5-year warranty, and it is the lower priced of the two. The Airthings 2989 View Radon is worth it when you need Wi-Fi.
What is the difference between the Airthings 2989 View Radon and the Airthings 325 Corentium Home 2?
Connectivity and power. The Airthings 2989 View Radon is on Wi-Fi and Bluetooth and can run from USB-C, while the Airthings 325 Corentium Home 2 is Bluetooth only and runs on two AA batteries. Their sensors are the same.
Do the Airthings 2989 View Radon and the Airthings 325 Corentium Home 2 work with Alexa and Google Home?
Yes, both work with Google Home, Alexa and Home Assistant. Neither supports Apple Home, SmartThings or Matter.
Who should buy the Airthings 325 Corentium Home 2?
Homeowners who want continuous radon monitoring with a readable screen and a simple app, who check levels while they are at home and would rather not pay for Wi-Fi they do not need.
Who should buy the Airthings 2989 View Radon?
Anyone who needs radon alerts away from home, for a second home, a rental or a mitigation system they want watched around the clock, and who likes the option of USB-C power.
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