Airthings 325 Corentium Home 2 vs Aranet Radiation comparison

Updated August 2026

Data from Amazon and official Airthings and Aranet sites.

2026 verdict

Same core idea, a puck-style monitor with a display, but a different hazard behind the Aranet Radiation, and here it is the Airthings 325 Corentium Home 2 that wins overall, leading on warranty plus a wider connectivity, integrations and sensors lineup thanks to its radon, temperature and humidity tracking and Google Home, Alexa and IFTTT support. The Aranet Radiation costs less and lasts longer between battery changes, but comparing their sensor rows head to head undersells what is actually happening: the Corentium Home 2 tracks radon and climate data, real tracked fields, while the Aranet Radiation tracks none of those because it measures ionizing radiation instead, something this air-quality-monitor table has no column for at all. Both ship with an on-device screen and a similarly strong owner rating, so build quality and readability are comparable even though the underlying purpose is not. Choose the Airthings 325 Corentium Home 2 if radon is what you are testing for; choose the Aranet Radiation only if background gamma radiation is the actual hazard you want to monitor, since neither one substitutes for the other.

Feature	Airthings 325 Corentium Home 2	Aranet Radiation	Winner
Price	$179.99	$139.00	Aranet Radiation
Warranty	5 years	2 years	Airthings 325 Corentium Home 2
Battery Life	3 years	4 years	Aranet Radiation
Connectivity	Bluetooth, Other	Bluetooth	Airthings 325 Corentium Home 2
Integrations	Google Home, Alexa, Home Assistant, IFTTT	Home Assistant	Airthings 325 Corentium Home 2
Sensors	Radon, Temperature, Humidity	None	Airthings 325 Corentium Home 2
Rating	4.6	4.6	Tie
Weather Resistance	NO	NO	Tie
Screen	YES	YES	Tie
Alerts	Air Quality Alerts	Air Quality Alerts	Tie

Winner

Airthings

Airthings 325 Corentium Home 2

$179.99

Buy on Amazon USA

+ Warranty: 5 years
+ Connectivity: Bluetooth, Other
+ Integrations: Google Home, Alexa, Home Assistant, IFTTT
- Price: $179.99 vs $139.00
- Battery Life: 3 years vs 4 years

Aranet

Aranet Radiation

$139.00

Buy on Amazon USA

+ Price: $139.00
+ Battery Life: 4 years
- Warranty: 2 years vs 5 years
- Connectivity: Bluetooth vs Bluetooth, Other

Frequently Asked Questions

Which is better overall: Airthings 325 Corentium Home 2 or Aranet Radiation?

The Airthings 325 Corentium Home 2 wins overall on warranty, connectivity, integrations and sensors, thanks to its radon, temperature and humidity tracking. The Aranet Radiation costs less and runs longer between battery changes, but measures a different hazard entirely.

What is the biggest difference between the Airthings 325 Corentium Home 2 and the Aranet Radiation?

What they detect. The Airthings 325 Corentium Home 2 tracks radon, temperature and humidity. The Aranet Radiation tracks ionizing radiation dose rate and total dose instead, and has no radon, temperature or humidity sensor at all.

Does the Aranet Radiation replace a radon monitor like the Corentium Home 2?

No. The Aranet Radiation has no radon sensor, so anyone concerned about radon needs a dedicated radon detector such as the Airthings 325 Corentium Home 2, regardless of the rest of the spec sheet.

Which one has the longer battery life?

The Aranet Radiation, which is rated for noticeably longer than the Airthings 325 Corentium Home 2 on a set of two AA batteries, thanks to its low-power e-ink display.

Who should buy the Airthings 325 Corentium Home 2?

Choose it if radon is your concern. It presents results as simple Good, Fair or Poor readouts, tracks temperature and humidity alongside radon, and works with Google Home, Alexa, Home Assistant and IFTTT.

Who should buy the Aranet Radiation?

Choose it only if background ionizing radiation, not radon, is what you want to monitor continuously. Its lower price and longer battery life do not change that it cannot detect radon at all.

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